Income Tax Disclosure [Abstract]
Income Taxes
Income Tax Disclosure [Text Block]
Share-based Payment Arrangement [Abstract]
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]
Award Type [Axis]
Award Type [Axis]
Award Type [Domain]
Award Type [Domain]
Restricted Stock
Restricted Stock [Member]
Restricted Stock Units
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
Number, Outstanding, at Beginning Balance (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number
Number, Granted (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period
Number, Vested (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period
Number, Forfeited (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period
Number, Outstanding, at Ending Balance (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Weighted-Average Fair Value, Outstanding, at Beginning Balance (in dollars per share)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value
Weighted-Average Fair Value, Granted (in dollars per share)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value
Weighted-Average Fair Value, Vested (in dollars per share)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value
Weighted-Average Fair Value, Forfeited (in dollars per share)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value
Weighted-Average Fair Value, Outstanding, at Ending Balance (in dollars per share)
Units vested for which the underlying common stock is yet to be issued (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Number
Property, Plant and Equipment [Abstract]
Schedule of Property and Equipment
Property, Plant and Equipment [Table Text Block]
Statement of Stockholders' Equity [Abstract]
Statement [Table]
Statement [Table]
Equity Components [Axis]
Equity Components [Axis]
Equity Component [Domain]
Equity Component [Domain]
Common Stock
Common Stock [Member]
Additional Paid-in Capital
Additional Paid-in Capital [Member]
Retained Earnings
Retained Earnings [Member]
Accumulated Other Comprehensive Loss
AOCI Attributable to Parent [Member]
Treasury Stock
Treasury Stock [Member]
Non - Controlling Interest
Noncontrolling Interest [Member]
Statement [Line Items]
Statement [Line Items]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)
Common Stock, Shares, Outstanding
Beginning balance
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest
Stock issued against stock-based compensation plans (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period
Stock issued against stock-based compensation plans
Stock Issued During Period, Value, Stock Options Exercised
Stock-based compensation
APIC, Share-based Payment Arrangement, Increase for Cost Recognition
Acquisition of treasury stock (in shares)
Treasury Stock, Shares, Acquired
Acquisition of treasury stock
Acquisition Of Treasury Stock Value
Equity impact of the value of stock that has been repurchased during the period and has not been retired and is held in treasury.
Allocation of equity component related to issuance costs on convertible senior notes
Adjustments to Additional Paid in Capital, Equity Component of Convertible Debt
Non-controlling interest
Noncontrolling Interest, Increase from Subsidiary Equity Issuance
Other comprehensive loss
Other Comprehensive Income (Loss), Net of Tax
Net income
Net Income (Loss) Attributable to Parent
Ending balance (in shares)
Ending balance
Leases [Abstract]
Schedule of supplemental balance sheet information
Schedule Of Leases In Statement Of Financial Position [Table Text Block]
Schedule Of Leases In Statement Of Financial Position [Table Text Block]
Schedule of components of lease cost
Lease, Cost [Table Text Block]
Schedule of supplemental cash flow informaton related to leases
Schedule Of Supplemental Cash Flow And Other Information, Leases [Table Text Block]
Schedule of Statement of Cash Flows, Supplemental Disclosures [Table Text Block]
Schedule of maturities of lease liabilities
Lessee, Operating Lease, Liability, Maturity [Table Text Block]
Schedule of maturities of lease liabilities
Finance Lease, Liability, Maturity [Table Text Block]
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Summary of Fair Value of Foreign Currency Exchange Contracts
Schedule of Foreign Exchange Contracts, Statement of Financial Position [Table Text Block]
Summary of Effect of Foreign Currency Exchange Contracts on Consolidated Statements of Income
Derivative Instruments, Gain (Loss) [Table Text Block]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated Other Comprehensive Loss
Comprehensive Income (Loss) Note [Text Block]
Fair Value Disclosures [Abstract]
Assets and Liabilities Measured at Fair Value
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill
Schedule of Goodwill [Table Text Block]
Schedule of indefinite lived Intangible Assets
Schedule of Indefinite-Lived Intangible Assets [Table Text Block]
Schedule of amortization of Intangible Assets
Finite-lived Intangible Assets Amortization Expense [Table Text Block]
Schedule of finite lived Intangible Assets useful lives
Schedule Of Finite Lived Intangible Assets Useful Lives Table [Table Text Block]
Schedule of finite lived intangible assets useful lives.
Schedule of estimated future amortization of Intangible Assets
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]
Cash payments for amounts included in the measurement of lease liabilities :
Cash Flow, Operating Activities, Lessee [Abstract]
Operating cash outflows for operating leases
Operating Lease, Payments
Operating cash outflows for finance leases
Finance Lease, Interest Payment on Liability
Financing cash outflows for finance leases
Finance Lease, Principal Payments
Right-of-use assets obtained in exchange for new operating lease liabilities
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability
Right-of-use assets obtained in exchange for new finance lease liabilities
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability
Weighted-average remaining lease term
Weighted-Average Remaining Lease Term [Abstract]
Weighted-Average Remaining Lease Term [Abstract]
Finance lease
Finance Lease, Weighted Average Remaining Lease Term
Operating lease
Operating Lease, Weighted Average Remaining Lease Term
Weighted-average discount rate
Weighted-Average Discount Rate [Abstract]
Weighted-Average Discount Rate [Abstract]
Finance lease
Finance Lease, Weighted Average Discount Rate, Percent
Operating lease
Operating Lease, Weighted Average Discount Rate, Percent
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
Liabilities, Noncurrent [Abstract]
Summary of Other Non-Current Liabilities
Other Noncurrent Liabilities [Table Text Block]
Other Income and Expenses [Abstract]
Gain on sale and mark-to-market of mutual funds, net
Gain (Loss) on Investments
Interest income
Investment Income, Interest
Others, net
Other Miscellaneous Nonoperating Income (Expense)
Other Miscellaneous Nonoperating Income (Expense)
Other income, net
Other Nonoperating Income (Expense)
Debt Disclosure [Abstract]
Borrowings
Debt Disclosure [Text Block]
2020 (April 1 - December 31)
Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year
2021
Finite-Lived Intangible Assets, Amortization Expense, Next Rolling Twelve Months
2022
Finite-Lived Intangible Assets, Amortization Expense, Rolling Year Two
2023
Finite-Lived Intangible Assets, Amortization Expense, Rolling Year Three
2024
Finite-Lived Intangible Assets, Amortization Expense, Rolling Year Four
2025 and thereafter
Finite-Lived Intangible Assets, Amortization Expense, Rolling Year Five
Total
Finite-Lived Intangible Assets, Net
Payables and Accruals [Abstract]
Schedule of Accrued Expenses and Other Current Liabilities
Schedule of Accrued Liabilities [Table Text Block]
Cost
Capitalized Computer Software, Gross
Less : Accumulated amortization
Capitalized Computer Software, Accumulated Amortization
Internally developed software, net
Capitalized Computer Software, Net
Amortization expense
Capitalized Computer Software, Amortization
Impairment charges
Capitalized Computer Software, Impairments
Accounting Policies [Abstract]
Cash, Cash Equivalents and Restricted Cash
Cash and Cash Equivalents Disclosure [Text Block]
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Schedule of Other Current Assets
Schedule of Other Current Assets [Table Text Block]
Subsequent Events [Abstract]
Subsequent Events
Subsequent Events [Text Block]
Income tax expense
Income Tax Expense (Benefit)
Effective tax rate, current income tax expense (benefit)
Effective Income Tax Rate Reconciliation, Percent
Excess tax benefits related to stock awards
Effective Income Tax Rate Reconciliation, Tax Expense (Benefit), Share-based Payment Arrangement, Amount
Summary of Significant Accounting Policies
Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block]
Schedule of costs related to company's stock-based compensation plan
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]
Schedule of stock options activity
Share-based Payment Arrangement, Option, Activity [Table Text Block]
Schedule of restricted stock and RSU activity
Share-based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block]
Schedule of performance based stock awards activity
Share-based Payment Arrangement, Performance Shares, Outstanding Activity [Table Text Block]
Numerators:
Net Income (Loss) Attributable to Parent [Abstract]
Denominators:
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Basic weighted average common shares outstanding (in shares)
Weighted Average Number of Shares Outstanding, Basic
Dilutive effect of share based awards (in shares)
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements
Diluted weighted average common shares outstanding (in shares)
Weighted Average Number of Shares Outstanding, Diluted
Earnings per share attributable to ExlService Holdings Inc. stockholders:
Earnings Per Share, Basic and Diluted [Abstract]
Basic (in dollars per share)
Earnings Per Share, Basic
Diluted (in dollars per share)
Earnings Per Share, Diluted
Weighted average potentially dilutive considered anti-dilutive and not included in computing diluted earnings per share (in shares)
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount
Other Assets
Other Assets Disclosure [Text Block]
Statement of Comprehensive Income [Abstract]
Other comprehensive (loss)/income:
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Unrealized (loss)/gain on cash flow hedges
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax
Foreign currency translation (loss)/gain
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax
Reclassification adjustments
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax [Abstract]
Gain on cash flow hedges
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax
Retirement benefits
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax
Income tax (expense)/benefit relating to above
Reclassification from AOCI, Current Period, Tax
Total other comprehensive (loss)/income
Total comprehensive (loss)/income
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest
Schedule of Finite-Lived Intangible Assets [Table]
Schedule of Finite-Lived Intangible Assets [Table]
Indefinite-lived Intangible Assets [Axis]
Indefinite-lived Intangible Assets [Axis]
Indefinite-lived Intangible Assets, Major Class Name [Domain]
Indefinite-lived Intangible Assets, Major Class Name [Domain]
Trade names and trademarks
Trademarks and Trade Names [Member]
Finite-Lived Intangible Assets by Major Class [Axis]
Finite-Lived Intangible Assets by Major Class [Axis]
Finite-Lived Intangible Assets, Major Class Name [Domain]
Finite-Lived Intangible Assets, Major Class Name [Domain]
Customer relationships
Customer Relationships [Member]
Developed technology
Developed Technology Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying amount
Finite-Lived Intangible Assets, Gross
Accumulated Amortization
Finite-Lived Intangible Assets, Accumulated Amortization
Indefinite lived intangible assets [Abstract]
Indefinite lived intangible assets [Abstract]
Indefinite lived intangible assets [Abstract]
Trade names and trademarks
Indefinite-lived Intangible Assets (Excluding Goodwill)
Total intangible assets, gross carrying amount
Intangible Assets, Gross (Excluding Goodwill)
Total intangible assets, net carrying amount
Intangible Assets, Net (Excluding Goodwill)
Income Tax Recognized in Other Comprehensive Income
Schedule of Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block]
Retirement Benefits [Abstract]
Employee Benefit Plans
Pension and Other Postretirement Benefits Disclosure [Text Block]
Fair Value, Recurring and Nonrecurring [Table]
Fair Value, Recurring and Nonrecurring [Table]
Measurement Frequency [Axis]
Measurement Frequency [Axis]
Measurement Frequency [Domain]
Measurement Frequency [Domain]
Recurring
Fair Value, Recurring [Member]
Fair Value Hierarchy and NAV [Axis]
Fair Value Hierarchy and NAV [Axis]
Fair Value Hierarchy and NAV [Domain]
Fair Value Hierarchy and NAV [Domain]
Level 1
Fair Value, Inputs, Level 1 [Member]
Level 2
Fair Value, Inputs, Level 2 [Member]
Level 3
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets
Assets, Fair Value Disclosure [Abstract]
Mutual funds
Money Market And Mutual Fund Fair Value Disclosure
Money market and mutual fund fair value disclosure.
Derivative financial instruments
Foreign Currency Contract, Asset, Fair Value Disclosure
Total
Assets, Fair Value Disclosure
Liabilities
Liabilities, Fair Value Disclosure [Abstract]
Derivative financial instruments
Foreign Currency Contracts, Liability, Fair Value Disclosure
Total
Financial and Nonfinancial Liabilities, Fair Value Disclosure
Statement of Financial Position [Abstract]
Preferred stock, par value (in dollars per share)
Preferred Stock, Par or Stated Value Per Share
Preferred stock, authorized (in shares)
Preferred Stock, Shares Authorized
Preferred stock, issued (in shares)
Preferred Stock, Shares Issued
Common stock, par value (in dollars per share)
Common Stock, Par or Stated Value Per Share
Common stock, authorized (in shares)
Common Stock, Shares Authorized
Common stock, issued (in shares)
Common Stock, Shares, Issued
Common stock, outstanding (in shares)
Treasury stock (in shares)
Treasury Stock, Shares
Summary of Other Income, net
Interest and Other Income [Table Text Block]
Other Current Assets
Other Current Assets [Text Block]
Schedule of Business Acquisitions, by Acquisition [Table]
Schedule of Business Acquisitions, by Acquisition [Table]
Scenario [Axis]
Scenario [Axis]
Scenario [Domain]
Scenario [Domain]
Pro Forma
Pro Forma [Member]
Reporting Unit [Axis]
Reporting Unit [Axis]
Reporting Unit [Domain]
Reporting Unit [Domain]
Healthcare Analytics
Healthcare Analytics [Member]
Healthcare Analytics [Member]
Measurement Input Type [Axis]
Measurement Input Type [Axis]
Measurement Input Type [Domain]
Measurement Input Type [Domain]
Long-term revenue growth rate
Measurement Input, Long-term Revenue Growth Rate [Member]
Discount rate
Measurement Input, Discount Rate [Member]
Statistical Measurement [Axis]
Statistical Measurement [Axis]
Statistical Measurement [Domain]
Statistical Measurement [Domain]
Minimum
Minimum [Member]
Maximum
Maximum [Member]
Business Acquisition [Line Items]
Business Acquisition [Line Items]
Goodwill, measurement input
Goodwill, Measurement Input
Goodwill, Measurement Input
Goodwill
Goodwill
Percent of total goodwill
Goodwill, Percent Of Total
Goodwill, Percent Of Total
Percentage of fair value in excess of carrying amount
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount
Accumulated Other Comprehensive Income (Loss) [Table]
Accumulated Other Comprehensive Income (Loss) [Table]
Cumulative foreign currency translation loss
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Unrealized (loss)/gain on cash flow hedges
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Retirement benefits
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss) [Line Items]
AOCL before tax
AOCI Including Portion Attributable to Noncontrolling Interest, before Tax
AOCI, tax
AOCI Including Portion Attributable to Noncontrolling Interest, Tax
Accumulated other comprehensive loss
Accumulated Other Comprehensive Income (Loss), Net of Tax
Revenue from Contract with Customer [Abstract]
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at the beginning of the period
Accounts Receivable, Allowance for Credit Loss
Additions during the period, net
Accounts Receivable, Credit Loss Expense (Reversal)
Charged against allowance
Accounts Receivable, Allowance for Credit Loss, Writeoff
Translation adjustment, if any
Accounts Receivable, Allowance for Credit Loss, Foreign Currency Translation
Accounts Receivable, Allowance for Credit Loss, Foreign Currency Translation
Balance at the end of the period
Related Party Transactions [Abstract]
Related Party Disclosures
Related Party Transactions Disclosure [Text Block]
Schedule of Long-term Debt Instruments [Table]
Schedule of Long-term Debt Instruments [Table]
Credit Facility [Axis]
Credit Facility [Axis]
Credit Facility [Domain]
Credit Facility [Domain]
Revolver Credit
Revolving Credit Facility [Member]
Long-term Debt, Type [Axis]
Long-term Debt, Type [Axis]
Long-term Debt, Type [Domain]
Long-term Debt, Type [Domain]
Notes
Convertible Notes Payable [Member]
Structured Payables
Notes Payable, Other Payables [Member]
Debt Instrument [Axis]
Debt Instrument [Axis]
Debt Instrument, Name [Domain]
Debt Instrument, Name [Domain]
3.50% Convertible Senior Notes due October 1, 2024
3.50% Convertible Senior Notes due October 1, 2024 [Member]
3.50% Convertible Senior Notes due October 1, 2024 [Member]
Debt Instrument [Line Items]
Debt Instrument [Line Items]
2020 (April - December)
Long-term Debt, Maturities, Repayments of Principal, Remainder of Fiscal Year
2021
Long-term Debt, Maturities, Repayments of Principal in Year Two
2022
Long-term Debt, Maturities, Repayments of Principal in Year Three
2023
Long-term Debt, Maturities, Repayments of Principal in Year Four
2024
Long-term Debt, Maturities, Repayments of Principal in Year Five
Total
Long-term Debt
Earnings Per Share
Earnings Per Share [Text Block]
Schedule of Acquired Finite-Lived Intangible Asset by Major Class [Table]
Schedule of Acquired Finite-Lived Intangible Asset by Major Class [Table]
Customer relationships
Developed technology
Trade names and trademarks (Finite lived)
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted average life of intangible assets
Finite-Lived Intangible Assets, Remaining Amortization Period
Schedule of Related Party Transactions, by Related Party [Table]
Schedule of Related Party Transactions, by Related Party [Table]
Convertible Notes Payable
Related Party Transaction [Line Items]
Related Party Transaction [Line Items]
Debt instrument face amount
Debt Instrument, Face Amount
Debt outstanding
Interest accrued
Interest Payable
Interest Expense, Related Party
Interest Expense, Related Party
Property, Plant and Equipment [Table]
Property, Plant and Equipment [Table]
Income Statement Location [Axis]
Income Statement Location [Axis]
Income Statement Location [Domain]
Income Statement Location [Domain]
Depreciation and Amortization
Depreciation And Amortization [Member]
Depreciation And Amortization [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment [Line Items]
Depreciation and amortization expense
Depreciation
Effect of the foreign exchange gains upon settlement of cash flow hedges
Gain (Loss) on Hedging Activity
Derivative Instruments, Gain (Loss) [Table]
Derivative Instruments, Gain (Loss) [Table]
Financial Instrument [Axis]
Financial Instrument [Axis]
Financial Instruments [Domain]
Financial Instruments [Domain]
Forward Contracts
Forward Contracts [Member]
Hedging Designation [Axis]
Hedging Designation [Axis]
Hedging Designation [Domain]
Hedging Designation [Domain]
Derivatives in hedging relationships
Designated as Hedging Instrument [Member]
Derivatives not designated as hedging instruments
Not Designated as Hedging Instrument [Member]
Hedging Relationship [Axis]
Hedging Relationship [Axis]
Hedging Relationship [Domain]
Hedging Relationship [Domain]
Derivatives in Cash Flow Hedging Relationships
Cash Flow Hedging [Member]
Derivative Instrument [Axis]
Derivative Instrument [Axis]
Derivative Contract [Domain]
Derivative Contract [Domain]
Foreign currency exchange contracts
Foreign Exchange Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments, Gain (Loss) [Line Items]
Foreign exchange contracts outstanding
Derivative Asset, Notional Amount
Net derivative losses to be reclassified within 12 months
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months
Maximum outstanding term of the cash flow hedges
Maximum Length of Time Hedged in Cash Flow Hedge
Schedule of Accumulated Other Comprehensive Loss
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
Stock Based Compensation
Share-based Payment Arrangement [Text Block]
Cash and cash equivalents
Cash and Cash Equivalents, at Carrying Value
Restricted cash (current)
Restricted Cash, Current
Restricted cash (non-current)
Restricted Cash, Noncurrent
Cash, cash equivalents and restricted cash
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents
Segment Reporting [Abstract]
Segment and Geographical Information
Segment Reporting Disclosure [Text Block]
Other Income, net
Interest and Other Income [Text Block]
Commitments and Contingencies Disclosure [Abstract]
Purchase commitments, net of advances
Purchase Commitment, Remaining Minimum Amount Committed
Export-oriented units established, percentage
Export Oriented Units Established Percentage
Export oriented units established percentage.
Aggregate disputed amount amount related to transfer pricing and permanent establishment
Aggregate Disputed Amount Related to Transfer Pricing and Permanent Establishment
Aggregate disputed amount related to transfer pricing and permanent establishment
Total bank guarantees and deposits in respect of contingencies
Total Bank Guarantees And Deposits In Respect Of Contingencies
Total Bank Guarantees and Deposits in Respect of Contingencies
Amounts paid as deposits in respect of contingencies
Amounts Paid As Deposits In Respect Of Contingencies
Amounts paid as deposits in respect of Contingencies.
Bank guarantee issued
Bank Guarantee Issued
Bank Guarantee Issued
Accounts receivable, including unbilled receivables
Accounts Receivable, before Allowance for Credit Loss
Less: Allowance for lifetime expected credit loss
Accounts receivable, net
Accounts Receivable, after Allowance for Credit Loss, Current
Revenue Based PRSUs
Revenue Based Performance Restricted Stock Units [Member]
Revenue Based Performance Restricted Stock Units [Member]
Market Condition Based PRSUs
Market Condition Based Performance Restricted Stock Units [Member]
Market Condition Based Performance Restricted Stock Units [Member]
Schedule of Other Assets
Schedule of Other Assets [Table Text Block]
Schedule of Revenues from External Customers and Long-Lived Assets [Table]
Schedule of Revenues from External Customers and Long-Lived Assets [Table]
Geographical [Axis]
Geographical [Axis]
Geographical [Domain]
Geographical [Domain]
United States
UNITED STATES
United Kingdom
UNITED KINGDOM
Rest of World
Rest Of World [Member]
Rest of World.
Total Non-United States
Non-US [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues, net
Revenue from Contract with Customer, Excluding Assessed Tax
Service cost
Defined Benefit Plan, Service Cost
Interest cost
Defined Benefit Plan, Interest Cost
Expected return on plan assets
Defined Benefit Plan, Expected Return (Loss) on Plan Assets
Amortization of actuarial loss/(gain)
Defined Benefit Plan, Amortization of Gain (Loss)
Net gratuity cost
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table]
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table]
Cost of revenues
Cost of Sales [Member]
General and administrative expenses
General and Administrative Expense [Member]
Selling and marketing expenses
Selling and Marketing Expense [Member]
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expenses
Share-based Payment Arrangement, Expense
Commitments and Contingencies
Commitments and Contingencies Disclosure [Text Block]
Employee Stock Option
Share-based Payment Arrangement, Option [Member]
Restricted Stock and Restricted Stock Units
Restricted Stock and Restricted Stock Units [Member]
Restricted Stock and Restricted Stock Units [Member]
Performance Based Stock Awards
Performance Based Stock Awards [Member]
Performance Based Stock Awards [Member]
Number available for grant (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant
Unrecognized compensation cost
Share-based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount
Cost not yet recognized, period for recognition
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition
Components of Net Periodic Benefit Cost
Schedule of Net Benefit Costs [Table Text Block]
Change in Plan Assets
Schedule of Changes in Fair Value of Plan Assets [Table Text Block]
Accrued Expenses and Other Current Liabilities
Accounts Payable, Accrued Liabilities, and Other Liabilities Disclosure, Current [Text Block]
Fair Value Measurements
Fair Value Measurement and Measurement Inputs, Recurring and Nonrecurring [Text Block]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Plan assets at January 1, 2020
Defined Benefit Plan, Plan Assets, Amount
Actual return
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss)
Employer contribution
Defined Benefit Plan, Plan Assets, Contributions by Employer
Benefits paid
Defined Benefit Plan, Plan Assets, Benefits Paid
Effect of exchange rate changes
Defined Benefit Plan, Plan Assets, Foreign Currency Translation Gain (Loss)
Plan assets at March 31, 2020
Reclassification out of Accumulated Other Comprehensive Income [Axis]
Reclassification out of Accumulated Other Comprehensive Income [Axis]
Reclassification out of Accumulated Other Comprehensive Income [Domain]
Reclassification out of Accumulated Other Comprehensive Income [Domain]
Reclassification out of Accumulated Other Comprehensive Income
Reclassification out of Accumulated Other Comprehensive Income [Member]
Derivatives Designated as Hedging Instruments
Derivatives in cash flow hedging relationships
Cost of revenues
Cost of Goods and Services Sold
General and administrative expenses
General and Administrative Expense
Selling & marketing expenses
Selling and Marketing Expense
Depreciation & amortization expense
Depreciation, Depletion and Amortization, Nonproduction
Reclassification from AOCI, before tax
Reclassification from AOCI, Current Period, before Tax, Attributable to Parent
Foreign exchange gain, net
Foreign Currency Transaction Gain (Loss), before Tax
Equity [Abstract]
Class of Treasury Stock [Table]
Class of Treasury Stock [Table]
Share Repurchase Program [Axis]
Share Repurchase Program [Axis]
Share Repurchase Program [Domain]
Share Repurchase Program [Domain]
2017 Repurchase Program
Two Thousand Seventeen Repurchase Program [Member]
Two Thousand Seventeen Repurchase Program [Member]
2019 Repurchase Program
Two Thousand Nineteen Repurchase Program [Member]
Two Thousand Nineteen Repurchase Program [Member]
Equity, Class of Treasury Stock [Line Items]
Equity, Class of Treasury Stock [Line Items]
Number of classes of common stock outstanding
Number Of Classes Of Common Stock Outstanding
Number Of Classes Of Common Stock Outstanding
Acquisition of restricted stock from employees in connection with withholding tax payments (in shares)
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation
Withholding tax payments related to the vesting of restricted stock for total consideration
Payment, Tax Withholding, Share-based Payment Arrangement
Weighted average purchase price prior to the vesting date (in dollars per share)
Accelerated Share Repurchases, Final Price Paid Per Share
Additional authorized amount
Stock Repurchase Program, Additional Authorized Amount
Stock Repurchase Program, Additional Authorized Amount
Authorized increase in repurchase amount
Stock Repurchase Program, Authorized Increase in Repurchase Amount Per Period
Stock Repurchase Program, Authorized Increase in Repurchase Amount Per Period
Authorized increase in repurchase amount, 2018
Stock Repurchase Program, Authorized Increase in Repurchase Amount Per Period, Year Two
Stock Repurchase Program, Authorized Increase in Repurchase Amount Per Period, Year Two
Authorized increase in repurchase amount, 2019
Stock Repurchase Program, Authorized Increase in Repurchase Amount Per Period, Year Three
Stock Repurchase Program, Authorized Increase in Repurchase Amount Per Period, Year Three
Repurchase of common stock authorized, maximum
Stock Repurchase Program, Authorized Amount
Common stock purchased under the repurchase program (in shares)
Common stock aggregate purchase price including commissions
Common Stock Aggregate Purchase Price Including Commission
Common stock aggregate purchase price including commission.
Common stock average purchase price per share (in dollars per share)
Treasury Stock Acquired, Average Cost Per Share
Leases
Lessee, Operating Leases [Text Block]
Leases
Lessee, Finance Leases [Text Block]
Revenues, net
Revenue from Contract with Customer [Text Block]
Basis of Preparation
Basis of Accounting, Policy [Policy Text Block]
Principles of Consolidation
Consolidation, Policy [Policy Text Block]
Use of Estimates
Use of Estimates, Policy [Policy Text Block]
Leases
Lessee, Leases [Policy Text Block]
Recent Accounting Pronouncements and Recently Adopted Accounting Pronouncements
New Accounting Pronouncements, Policy [Policy Text Block]
Expected return on plan assets, percentage
Defined Benefit Plan Expected Return On Plan Assets Percentage
Defined Benefit Plan Expected Return On Plan Assets Percentage
Discretionary contributions towards 401(k) plan, maximum percentage
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent
Discretionary contributions to 401(k) plans
Defined Contribution Plan, Employer Discretionary Contribution Amount
Defined contribution plan, cost
Defined Contribution Plan, Cost
Line of Credit Facility [Table]
Line of Credit Facility [Table]
Business Acquisition [Axis]
Business Acquisition [Axis]
Business Acquisition, Acquiree [Domain]
Business Acquisition, Acquiree [Domain]
SCIO
SCIO [Member]
SCIO [Member]
Revolving Credit Facility
New Credit Agreement
New Credit Agreement [Member]
New Credit Agreement [Member]
Variable Rate [Axis]
Variable Rate [Axis]
Variable Rate [Domain]
Variable Rate [Domain]
Prime Rate
Prime Rate [Member]
London Interbank Offered Rate (LIBOR)
London Interbank Offered Rate (LIBOR) [Member]
Notes Payable, Other Payables
Credit Facilities [Line Items]
Line of Credit Facility [Line Items]
Maximum borrowing capacity
Line of Credit Facility, Maximum Borrowing Capacity
Option to increase additional credit facility
Line Of Credit Facility Option For Additional Borrowing Capacity
Line of credit facility option for additional borrowing capacity.
Basis spread on variable rate
Debt Instrument, Basis Spread on Variable Rate
Commitment fee percentage range on unused credit facility
Line of Credit Facility, Commitment Fee Percentage
Line of credit interest rate during period
Line of Credit Facility, Interest Rate During Period
Unrestricted domestic cash and cash equivalents threshold
Debt Instrument, Covenant, Domestic Cash and Cash Equivalents Threshold
Debt Instrument, Covenant, Domestic Cash and Cash Equivalents Threshold
Interest coverage ratio, minimum
Debt Instrument, Covenant, Interest Coverage Ratio, Minimum
Debt Instrument, Covenant, Interest Coverage Ratio, Minimum
Leverage ratio, maximum
Debt Instrument, Covenant, Leverage Ratio, Maximum
Debt Instrument, Covenant, Leverage Ratio, Maximum
Outstanding debt
Long-term Line of Credit
Long-term debt, maturities, repayments of principal in next twelve months
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months
Outstanding debt, noncurrent
Long-term Line of Credit, Noncurrent
Outstanding debt, current
Line of Credit, Current
Unamortized debt issuance costs
Debt Issuance Costs, Net
Interest rate
Debt Instrument, Interest Rate, Stated Percentage
Interest expense
Interest Expense, Debt
Conversion rate
Debt Instrument, Convertible, Conversion Ratio
Debt instrument, conversion price (in dollars per share)
Debt Instrument, Convertible, Conversion Price
Threshold percentage of stock price trigger
Debt Instrument, Convertible, Threshold Percentage of Stock Price Trigger
Repayments of outstanding borrowings
Repayments of Lines of Credit
Net proceeds from convertible notes
Proceeds from Debt, Net of Issuance Costs
Debt issuance costs
Debt Issuance Costs, Gross
Payment of debt issuance costs
Payments of Debt Issuance Costs
Liability component of debt issuance costs
Debt Issuance Costs, Net, Liability Component
Debt Issuance Costs, Net, Liability Component
Equity component of debt issuance costs
Debt Issuance Costs, Net, Equity Component
Debt Issuance Costs, Net, Equity Component
Unamortized debt issuance costs
Unamortized Debt Issuance Expense
Convertible notes, liability component
Convertible Debt, Fair Value Disclosures
Convertible senior notes, interest rate
Debt Instrument, Interest Rate, Effective Percentage
Remaining discount amortization period
Debt Instrument, Convertible, Remaining Discount Amortization Period
Debt discount amortization
Amortization of Debt Discount (Premium)
Unamortized debt discount
Debt Instrument, Unamortized Discount
Structured payable
Current portion of long-term borrowings
Long-term Debt, Current Maturities
Long-term borrowings, less current portion
Long-term Debt, Excluding Current Maturities
Outstanding letters of credit
Letters of Credit Outstanding, Amount
Revenue from External Customers by Products and Services [Table]
Revenue from External Customers by Products and Services [Table]
Consolidation Items [Axis]
Consolidation Items [Axis]
Consolidation Items [Domain]
Consolidation Items [Domain]
Operating Segments
Operating Segments [Member]
Segments [Axis]
Segments [Axis]
Segments [Domain]
Segments [Domain]
Insurance
Insurance [Member]
Insurance [Member]
Healthcare
Health Care [Member]
Emerging Business
Emerging Business [Member]
Emerging Business [Member]
Analytics
Analytics [Member]
Analytics [Member]
Product and Service [Axis]
Product and Service [Axis]
Product and Service [Domain]
Product and Service [Domain]
BPM and related services
BPM and Related Services [Member]
BPM and Related Services [Member]
Analytics services
Analytics Services [Member]
Analytics Services [Member]
Revenues and cost of revenues for Company's reportable segments [Line Items]
Revenue from External Customer [Line Items]
Cost of revenues
Cost of Goods and Service, Excluding Depreciation, Depletion, and Amortization
Gross profit
Gross Profit
Operating expenses
Operating Expenses
Foreign exchange gain, interest expense and other income, net
Nonoperating Income (Expense)
Loss from equity-method investment
Income (Loss) from Equity Method Investments
Net income attributable to ExlService Holdings, Inc. stockholders
Amortization expense
Amortization of Intangible Assets
Derivative instruments
Derivative Instruments and Hedges, Liabilities, Noncurrent
Unrecognized tax benefits
Liability for Uncertainty in Income Taxes, Noncurrent
Retirement benefits
Liability, Defined Benefit Plan, Noncurrent
Deferred transition revenue
Contract with Customer, Liability, Noncurrent
Others
Other Sundry Liabilities, Noncurrent
Other non-current liabilities
Other Liabilities, Noncurrent
Schedule of Maturities of Long-term Debt
Schedule of Maturities of Long-term Debt [Table Text Block]
Accrued expenses
Accrued Expenses Current
Accrued expenses.
Payable to statutory authorities
Statutory Authority Payables, Current
Statutory Authority Payables, Current
Derivative instruments
Derivative Instruments and Hedges, Liabilities
Client liabilities
Broker-Dealer, Payable to Customer
Interest payable
Interest Payable, Current
Other current liabilities
Other Liabilities, Current
Accrued expenses and other current liabilities
Accrued Liabilities, Current
Capitalized Contract Cost [Table]
Capitalized Contract Cost [Table]
Capitalized Contract Cost [Axis]
Capitalized Contract Cost [Axis]
Capitalized Contract Cost [Domain]
Capitalized Contract Cost [Domain]
Contract Acquisition Costs
Contract Acquisition Costs [Member]
Contract Acquisition Costs [Member]
Contract Fulfillment Costs
Contract Fulfillment Costs [Member]
Contract Fulfillment Costs [Member]
Capitalized Contract Cost [Line Items]
Capitalized Contract Cost [Line Items]
Increase (Decrease) In Capitalized Contract Costs [Roll Forward]
Increase (Decrease) In Capitalized Contract Costs [Roll Forward]
Increase (Decrease) In Capitalized Contract Costs [Roll Forward]
Opening Balance
Capitalized Contract Cost, Gross
Addition
Increase In Capitalized Contract Cost Gross
Increase In Capitalized Contract Cost Gross
Amortization
Capitalized Contract Cost, Amortization
Closing Balance
Schedule of Goodwill [Table]
Schedule of Goodwill [Table]
TT&L
Travel, Transportation and Logistics [Member]
Travel, Transportation and Logistics [Member]
F&A
Finance and Accounting [Member]
Finance and Accounting [Member]
All Other
Other Operations Management [Member]
Other Operations Management [Member]
Goodwill [Line Items]
Goodwill [Line Items]
Goodwill [Roll Forward]
Goodwill [Roll Forward]
Beginning Balance
Currency translation adjustments
Goodwill, Foreign Currency Translation Gain (Loss)
Goodwill Reallocation
Goodwill, Transfers
Ending Balance
Derivative instruments
Derivative Asset, Current
Advances to suppliers
Prepaid Supplies
Receivables from statutory authorities
Service Taxes Receivable, Current
Service Taxes Receivable, Current
Contract assets
Contract with Customer, Asset, Gross, Current
Deferred contract fulfillment costs
Deferred Contract Acquisition Costs Current
Deferred Contract Acquisition Costs Current
Others
Other Assets, Miscellaneous, Current
Other current assets
Other Assets, Current
Income Statement [Abstract]
Operating expenses:
Operating Expenses [Abstract]
General and administrative expenses
Selling and marketing expenses
Depreciation and amortization expense
Impairment and restructuring charges
Restructuring Costs and Asset Impairment Charges
Total operating expenses
Income from operations
Operating Income (Loss)
Interest expense
Interest Expense
Other income, net
Income before income tax expense and earnings from equity affiliates
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest
Income before earnings from equity affiliates
Income (Loss) From Continuing Operations Before Equity Method Investments, Total
Income (Loss) From Continuing Operations Before Equity Method Investments, Total
Earnings per share attributable to ExlService Holdings, Inc. stockholders:
Weighted-average number of shares used in computing earnings per share attributable to ExlService Holdings Inc. stockholders:
Basic (in shares)
Diluted (in shares)
Accounts receivable, net
Contract assets
Contract with Customer, Asset, before Allowance for Credit Loss
Contract liabilities:
Contract with Customer, Liability [Abstract]
Deferred revenue (consideration received in advance)
Contract with Customer, Liability
Consideration received for process transition activities
Contract From Customer Liability,, Consideration Received From Transitions Activities
Contract From Customer Liability, Consideration Received From Transitions Activities
Contracts with Customer, Receivables and Liabilities
Contract with Customer, Asset and Liability [Table Text Block]
Contract Acquisition and Fulfillment Costs
Capitalized Contract Cost [Table Text Block]
Movement in Allowance for Expected Credit Loss
Accounts Receivable, Allowance for Credit Loss [Table Text Block]
Property and Equipment, net
Property, Plant and Equipment Disclosure [Text Block]
Fair value of convertible notes
Number of operating segments
Number of Operating Segments
Lease deposits
Security Deposit
Derivative instruments
Derivative Asset
Deposits with statutory authorities
Deposit Assets
Term deposits
Time Deposits, at Carrying Value
Contract assets
Contract with Customer, Asset, Gross, Noncurrent
Deferred contract fulfillment costs
Deferred Contract Acquisition Costs NonCurrent
Deferred Contract Acquisition Costs NonCurrent
Others
Other Assets, Miscellaneous
Other assets
Other Assets
New Accounting Pronouncements or Change in Accounting Principle [Table]
New Accounting Pronouncements or Change in Accounting Principle [Table]
Adjustments for New Accounting Pronouncements [Axis]
Adjustments for New Accounting Pronouncements [Axis]
Type of Adoption [Domain]
Type of Adoption [Domain]
Accounting Standards Update 2016-02
Accounting Standards Update 2016-02 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease right-of-use assets
Operating Lease, Right-of-Use Asset
Deferred rent
Deferred Rent Credit, Current
Operating lease liabilities
Operating Lease, Liability
India
INDIA
United States
Philippines
PHILIPPINES
Rest of World
Long-lived assets
Long-Lived Assets
Cover [Abstract]
Document Type
Document Type
Document Quarterly Report
Document Quarterly Report
Document Period End Date
Document Period End Date
Document Transition Report
Document Transition Report
Entity File Number
Entity File Number
Entity Registrant Name
Entity Registrant Name
Entity Incorporation, State or Country Code
Entity Incorporation, State or Country Code
Entity Tax Identification Number
Entity Tax Identification Number
Entity Address, Address Line One
Entity Address, Address Line One
Entity Address, Address Line Two
Entity Address, Address Line Two
Entity Address, City or Town
Entity Address, City or Town
Entity Address, State or Province
Entity Address, State or Province
Entity Address, Postal Zip Code
Entity Address, Postal Zip Code
City Area Code
City Area Code
Local Phone Number
Local Phone Number
Entity Current Reporting Status
Entity Current Reporting Status
Entity Interactive Data Current
Entity Interactive Data Current
Entity Filer Category
Entity Filer Category
Entity Small Business
Entity Small Business
Entity Emerging Growth Company
Entity Emerging Growth Company
Title of 12(b) Security
Title of 12(b) Security
Trading Symbol
Trading Symbol
Security Exchange Name
Security Exchange Name
Entity Shell Company
Entity Shell Company
Entity Common Stock, Shares Outstanding
Entity Common Stock, Shares Outstanding
Amendment Flag
Amendment Flag
Entity Central Index Key
Entity Central Index Key
Current Fiscal Year End Date
Current Fiscal Year End Date
Document Fiscal Period Focus
Document Fiscal Period Focus
Document Fiscal Year Focus
Document Fiscal Year Focus
Operating Lease
Operating Leases [Abstract]
Operating Leases [Abstract]
Operating lease liabilities - Current
Operating Lease, Liability, Current
Operating lease liabilities - Non-current
Operating Lease, Liability, Noncurrent
Total operating lease liabilities
Finance Lease
Finance Lease [Abstract]
Finance Lease [Abstract]
Property and equipment, gross
Finance Lease, Right-of-Use Asset, Before Accumulated Amortization
Finance Lease, Right-of-Use Asset, Before Accumulated Amortization
Accumulated depreciation
Finance Lease, Right-of-Use, Accumulated Amortization
Finance Lease, Right-of-Use, Accumulated Depreciation
Property and equipment, net
Finance Lease, Right-of-Use Asset
Finance lease liabilities - Current
Finance Lease, Liability, Current
Finance lease liabilities - Non-current
Finance Lease, Liability, Noncurrent
Total finance lease liabilities
Finance Lease, Liability
Effect of net investment hedges on accumulated other comprehensive loss
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax
(Loss)/Gain recognized in consolidated statements of income
Revenues and Cost of Revenues for Company's Reportable Segments
Schedule of Segment Reporting Information, by Segment [Table Text Block]
Revenues Based on Geographical Information
Revenue from External Customers by Geographic Areas [Table Text Block]
Property, Plant and Equipment based on Geographical Information
Long-lived Assets by Geographic Areas [Table Text Block]
Prospective Adoption of New Accounting Pronouncements [Axis]
Prospective Adoption of New Accounting Pronouncements [Axis]
Accounting Guidance [Domain]
Accounting Guidance [Domain]
Previous U.S. GAAP Standards
Previous Accounting Guidance [Member]
Accounts receivable not billed
Unbilled Contracts Receivable
Contract liability, revenue recognized
Contract with Customer, Liability, Revenue Recognized
Impairment loss in relation to costs capitalized
Capitalized Contract Cost, Impairment Loss
Provision for doubtful receivables
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Number of Options, Outstanding, Beginning Balance (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number
Number of Options, Granted (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross
Number of Options, Exercised (in shares)
Number of Options, Forfeited (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period
Number of Options, Outstanding, Ending Balance (in shares)
Number of Options, Vested and exercisable at end of period (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Weighted-Average Exercise Price, Outstanding, Beginning Balance (in dollars per share)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price
Weighted-Average Exercise Price, Granted (in dollars per share)
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price
Weighted-Average Exercise Price, Exercised (in dollars per share)
Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price
Weighted-Average Exercise Price, Forfeited (in dollars per share)
Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price
Weighted-Average Exercise Price, Outstanding, Ending Balance (in dollars per share)
Weighted Average Exercise Price, Vested and exercisable at end of period (in dollars per share)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Exercise Price
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Aggregate Intrinsic Value, Outstanding
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value
Aggregate Intrinsic Value, Exercised
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value
Aggregate Intrinsic Value, Vested and exercisable at end of period
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Aggregate Intrinsic Value
Weighted-Average Remaining Contractual Life
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term
Weighted-Average Remaining Contractual Life, Vested and exercisable at end of period
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term
Statement of Cash Flows [Abstract]
Cash flows from operating activities:
Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract]
Adjustments to reconcile net income to net cash (used for)/provided by operating activities:
Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]
Depreciation and amortization expense
Depreciation, Depletion and Amortization
Stock-based compensation expense
Share-based Payment Arrangement, Noncash Expense
Amortization of operating lease right-of-use assets
Amortization Of Operating Lease Right Of Use Asset
Amortization Of Operating Lease Right Of Use Asset
Unrealized gain on short term investments
Unrealized Gain (Loss) on Investments
Unrealized foreign exchange (gain)/loss, net
Foreign Currency Transaction Gain (Loss), Unrealized
Deferred income tax expense
Deferred Income Tax Expense (Benefit)
Allowance for expected credit losses
Amortization of non-cash interest expense related to convertible senior notes
Impairment charges
Asset Impairment Charges
Others, net
Other Noncash Income (Expense)
Change in operating assets and liabilities:
Increase (Decrease) in Operating Capital [Abstract]
Accounts receivable
Increase (Decrease) in Accounts Receivable
Prepaid expenses and other current assets
Increase (Decrease) in Prepaid Expense and Other Assets
Advance income tax, net
Increase (Decrease) in Income Taxes Payable
Other assets
Increase (Decrease) in Other Operating Assets
Accounts payable
Increase (Decrease) in Accounts Payable
Deferred revenue
Increase (Decrease) in Contract with Customer, Liability
Accrued employee costs
Increase (Decrease) in Other Employee-Related Liabilities
Accrued expenses and other liabilities
Increase (Decrease) in Other Accounts Payable and Accrued Liabilities
Operating lease liabilities
Increase Decrease in Operating Lease Liability
Increase Decrease in Operating Lease Liability
Net cash (used for)/provided by operating activities
Net Cash Provided by (Used in) Operating Activities
Cash flows from investing activities:
Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract]
Purchases of property and equipment
Payments to Acquire Property, Plant, and Equipment
Investment in equity affiliate
Payments to Acquire Interest in Subsidiaries and Affiliates
Purchase of investments
Payments to Acquire Investments
Proceeds from redemption of investments
Proceeds from Sale, Maturity and Collection of Investments
Net cash provided by/(used for) investing activities
Net Cash Provided by (Used in) Investing Activities
Cash flows from financing activities:
Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract]
Principal payments of finance lease liabilities
Repayments of Long-term Capital Lease Obligations
Proceeds from borrowings
Proceeds from Issuance of Long-term Debt
Repayments of borrowings
Repayments of Debt
Payment of debt issuance costs
Acquisition of treasury stock
Payments for Repurchase of Common Stock
Proceeds from exercise of stock options
Proceeds from Stock Options Exercised
Net cash provided by financing activities
Net Cash Provided by (Used in) Financing Activities
Effect of exchange rate changes on cash, cash equivalents and restricted cash
Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents
Net increase/(decrease) in cash, cash equivalents and restricted cash
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect
Cash, cash equivalents and restricted cash at the beginning of the period
Cash, cash equivalents and restricted cash at the end of the period
Finance lease:
Lease, Cost [Abstract]
Amortization of right-of-use assets
Finance Lease, Right-of-Use Asset, Amortization
Interest on lease liabilities
Finance Lease, Interest Expense
Operating lease
Operating Lease, Cost
Lease cost
Lease, Cost
Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table]
Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table]
Balance Sheet Location [Axis]
Balance Sheet Location [Axis]
Balance Sheet Location [Domain]
Balance Sheet Location [Domain]
Other current assets
Other Current Assets [Member]
Other assets
Other Assets [Member]
Accrued expenses and other current liabilities
Accrued Expenses And Other Current Liabilities [Member]
Accrued expenses and other current liabilities.
Other non-current liabilities
Other Noncurrent Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivatives, Fair Value [Line Items]
Foreign currency exchange contracts, asset
Derivative Asset, Fair Value, Gross Asset
Foreign currency exchange contracts, liability
Derivative Liability, Fair Value, Gross Liability
Unrealized gain/(loss) on cash flow hedges
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax
Retirement benefits
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, Tax
Total Income tax benefit/(expense) recognized in other comprehensive income
Schedule of Cash and Cash Equivalents
Schedule of Cash and Cash Equivalents [Table Text Block]
Restrictions on Cash and Cash Equivalents
Restrictions on Cash and Cash Equivalents [Table Text Block]
Operating Leases
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
2020 (April 1 - December 31)
Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year
2020
Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months
2021
Lessee, Operating Lease, Liability, Payments, Due Year Two
2022
Lessee, Operating Lease, Liability, Payments, Due Year Three
2023
Lessee, Operating Lease, Liability, Payments, Due Year Four
2024
Lessee, Operating Lease, Liability, Payments, Due Year Five
2025 and thereafter
Lessee, Operating Lease, Liability, Payments, Due after Year Five
Total lease payments
Lessee, Operating Lease, Liability, Payments, Due
Less: Imputed interest
Lessee, Operating Lease, Liability, Undiscounted Excess Amount
Present value of lease liabilities
Finance Leases
Finance Lease, Liability, Payment, Due [Abstract]
2020 (April 1 - December 31)
Finance Lease, Liability, Payments, Remainder of Fiscal Year
2020
Finance Lease, Liability, Payments, Due Next Twelve Months
2021
Finance Lease, Liability, Payments, Due Year Two
2022
Finance Lease, Liability, Payments, Due Year Three
2023
Finance Lease, Liability, Payments, Due Year Four
2024
Finance Lease, Liability, Payments, Due Year Five
2025 and thereafter
Finance Lease, Liability, Payments, Due after Year Five
Total lease payments
Finance Lease, Liability, Payment, Due
Less: Imputed interest
Finance Lease, Liability, Undiscounted Excess Amount
Present value of lease liabilities
Goodwill and Intangible Assets
Goodwill and Intangible Assets Disclosure [Text Block]
Other Non-Current Liabilities
Accounts Payable, Accrued Liabilities, and Other Liabilities Disclosure, Noncurrent [Text Block]
Property, Plant and Equipment, Type [Axis]
Property, Plant and Equipment, Type [Axis]
Property, Plant and Equipment, Type [Domain]
Property, Plant and Equipment, Type [Domain]
Network equipment and computers
Technology Equipment [Member]
Software
Software and Software Development Costs [Member]
Leasehold improvements
Leasehold Improvements [Member]
Office furniture and equipment
Furniture and Fixtures [Member]
Motor vehicles
Vehicles [Member]
Buildings
Building [Member]
Land
Land [Member]
Capital work in progress
Construction in Progress [Member]
Owned Assets:
Property, Plant and Equipment, Net, Excluding Capital Leased Assets [Abstract]
Estimated useful lives
Property, Plant and Equipment, Useful Life
Owned assets, gross
Property, Plant and Equipment, Gross, Excluding Capital Leased Assets
Less: Accumulated depreciation and amortization
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Excluding Capital Leased Assets
Owned assets, net
Property, Plant and Equipment, Net, Excluding Capital Leased Assets
Right-of-use assets under finance leases:
Capital Leases, Balance Sheet, Assets by Major Class, Net [Abstract]
Finance lease, right of use asset, gross
Less: Accumulated depreciation and amortization
Property and equipment, net
Property, Plant, And Equipment And Finance Lease Right-of-Use Asset, After Accumulated Depreciation And Amortization
Property, Plant, And Equipment And Finance Lease Right-of-Use Asset, After Accumulated Depreciation And Amortization
Derivatives and Hedge Accounting
Derivative Instruments and Hedging Activities Disclosure [Text Block]
Capital Structure
Stockholders' Equity Note Disclosure [Text Block]
Assets
Assets [Abstract]
Current assets:
Assets, Current [Abstract]
Cash and cash equivalents
Short-term investments
Short-term Investments
Restricted cash
Accounts receivable, net
Prepaid expenses
Other Prepaid Expense, Current
Advance income tax, net
Prepaid Taxes
Other current assets
Total current assets
Assets, Current
Property and equipment, net
Property, Plant and Equipment, Net
Restricted cash
Deferred tax assets, net
Deferred Income Tax Assets, Net
Intangible assets, net
Other assets
Other Assets, Noncurrent
Investment in equity affiliate
Equity Method Investments
Total assets
Assets
Liabilities and stockholders’ equity
Liabilities and Equity [Abstract]
Current liabilities:
Liabilities, Current [Abstract]
Accounts payable
Accounts Payable, Current
Deferred revenue
Contract with Customer, Liability, Current
Accrued employee costs
Employee-related Liabilities, Current
Accrued expenses and other current liabilities
Current portion of operating lease liabilities
Income taxes payable, net
Accrued Income Taxes, Current
Current portion of finance lease liabilities
Total current liabilities
Liabilities, Current
Operating lease liabilities, less current portion
Income taxes payable
Accrued Income Taxes, Noncurrent
Deferred tax liabilities, net
Deferred Income Tax Liabilities, Net
Finance lease liabilities, less current portion
Other non-current liabilities
Total liabilities
Liabilities
Commitments and Contingencies
Commitments and Contingencies
Preferred stock, $0.001 par value; 15,000,000 shares authorized, none issued
Preferred Stock, Value, Issued
ExlService Holdings, Inc. Stockholders’ equity:
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]
Common stock, $0.001 par value; 100,000,000 shares authorized, 38,813,775 shares issued and 34,315,996 shares outstanding as of March 31, 2020 and 38,480,654 shares issued and 34,185,241 shares outstanding as of December 31, 2019
Common Stock, Value, Issued
Additional paid-in capital
Additional Paid in Capital, Common Stock
Retained earnings
Retained Earnings (Accumulated Deficit)
Accumulated other comprehensive loss
Total including shares held in treasury
Stockholders Equity Including Shares Held In Treasury
Total stockholders' equity including shares held in treasury.
Less: 4,497,779 shares as of March 31, 2020 and 4,295,413 shares as of December 31, 2019, held in treasury, at cost
Treasury Stock, Value
Stockholders’ equity
Stockholders' Equity Attributable to Parent
Total equity
Total liabilities and stockholders’ equity
Liabilities and Equity