Segment Information (Tables)

12 Months Ended

Dec. 31, 2015

Segment Reporting [Abstract]

Revenues and Cost of Revenues for Company's Operations Management and Analytics and Business Transformation Segments

Revenues and cost of revenues for each of the years ended December 31, 2015, 2014 and 2013, for Operations Management and Analytics segments, respectively, are as follows:

	Year ended December 31, 2015						Year ended December 31, 2014
	Operations Management		Analytics		Total		Operations Management		Analytics		Total
Revenues, net	$	506,341	$	122,151	$	628,492	$	433,663	$	65,615	$	499,278
Cost of revenues (exclusive of depreciation and amortization)	324,079		78,838		$	402,917	286,493		46,042		332,535
Gross profit	$	182,262	$	43,313	$	225,575	$	147,170	$	19,573	$	166,743
Operating expenses					158,232						132,703
Foreign exchange gain/(loss) and other income, net					8,433						3,598
Income tax expense					24,211						5,193
Net income					$	51,565					$	32,445

	Year ended December 31, 2013
	Operations Management		Analytics		Total
Revenues, net	$	432,916	$	45,536	$	478,452
Cost of revenues (exclusive of depreciation and amortization)	260,241		30,701		290,942
Gross profit	$	172,675	$	14,835	$	187,510
Operating expenses					120,090
Foreign exchange gain/(loss) and other income, net					(2,443		)
Income tax expense					16,880
Net income					$	48,097