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Organization and Basis of Presentation	12 Months Ended
Organization and Basis of Presentation	Dec. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization and Basis of Presentation	Organization and Basis of Presentation Organization ExlService Holdings, Inc. (“ExlService Holdings”) is organized as a corporation under the laws of the state of Delaware. ExlService Holdings, together with its subsidiaries (collectively, the “Company”), is a leading Operations Management and Analytics company that helps businesses enhance growth and profitability. Using its proprietary platforms, methodologies and tools the Company looks deeper to help companies improve global operations, enhance data-driven insights, increase customer satisfaction, and manage risk and compliance. The Company’s clients are located principally in the U.S. and the U.K.