SEGMENT INFORMATION (Tables)

12 Months Ended

Dec. 31, 2017

Segment Reporting [Abstract]

Schedule of Segment Revenues from External Customers and Segment Operating Profit

evenues from external customers and segment operating profit/(loss) for the North America, Europe, Russia and Other reportable segments were as follows:

	For the years ended December 31,
	2017		2016		2015
Total segment revenues:
North America	$	796,126	$	642,216	$	471,603
Europe	593,167		474,988		400,460
Russia	62,994		43,611		37,992
Other	—		—		4,911
Total segment revenues	$	1,452,287	$	1,160,815	$	914,966
Segment operating profit/(loss):
North America	$	169,340	$	143,021	$	112,312
Europe	92,080		67,545		68,717
Russia	13,906		7,555		5,198
Other	—		—		(94		)
Total segment operating profit	$	275,326	$	218,121	$	186,133

Reconciliation of Segment Revenues and Operating Profit to Consolidated Income Before Provision for Income Taxes

Reconciliations of segment revenues to consolidated revenues and segment operating profit to consolidated income before provision for income taxes are presented below:

	For the Years Ended December 31,
	2017			2016			2015
Total segment revenues	$	1,452,287		$	1,160,815		$	914,966
Other income included in segment revenues	(1,839		)	(683		)	(838		)
Revenues	$	1,450,448		$	1,160,132		$	914,128
Total segment operating profit:	$	275,326		$	218,121		$	186,133
Unallocated amounts:
Other income included in segment revenues	(1,839		)	(683		)	(838		)
Stock-based compensation expense	(52,407		)	(49,244		)	(45,833		)
Non-corporate taxes	(9,659		)	(5,909		)	(4,274		)
Professional fees	(8,032		)	(8,265		)	(7,104		)
Depreciation and amortization	(7,632		)	(8,290		)	(5,581		)
Bank charges	(1,969		)	(1,515		)	(1,352		)
One-time charges	(1,741		)	(706		)	(747		)
Other corporate expenses	(19,101		)	(9,813		)	(14,437		)
Income from operations	172,946			133,696			105,967
Interest and other income, net	4,601			4,848			4,731
Foreign exchange loss	(3,242		)	(12,078		)	(4,628		)
Income before provision for income taxes	$	174,305		$	126,466		$	106,070

Geographical Information of Long-Lived Assets Based on Physical Location

he Company’s long-lived assets based on physical location of the assets was as follows:

	December 31, 2017		December 31, 2016		December 31, 2015
Belarus	$	49,866	$	46,011	$	44,879
Russia	9,617		7,203		2,084
Ukraine	6,995		5,610		4,487
Hungary	3,901		3,485		2,485
United States	3,371		2,618		1,969
Poland	2,893		2,213		1,088
India	2,698		1,650		1,099
China	2,608		1,887		514
Bulgaria	922		722		317
Other	3,548		2,217		1,577
Total	$	86,419	$	73,616	$	60,499

Revenues by Client Location

The table below presents information about the Company’s revenues by client location including reimbursable expenses and other revenues, of $17,138, $12,521 and $9,511 for the years ended 2017, 2016 and 2015. See Note 1 “Nature of Business and Summary of Significant Accounting Policies” for discussion on reclassifications to conform to the current presentation.

Information about the Company’s revenues by client location is as follows:

	For the Years Ended December 31,
	2017		2016		2015
United States	$	783,563	$	611,392	$	431,992
United Kingdom	188,995		177,194		166,418
Switzerland	123,281		122,919		111,686
Russia	61,222		40,944		36,585
Germany	60,158		43,621		36,403
Canada	57,129		59,189		58,319
Netherlands	51,556		17,521		10,373
Sweden	32,161		23,838		10,775
Hong Kong	19,795		21,010		23,285
United Arab Emirates	12,403		3,615		—
Belgium	8,725		8,627		8,113
Ireland	8,674		5,167		5,536
China	7,379		4,479		817
Italy	6,505		4,052		2,342
Other locations	28,902		16,564		11,484
Revenues	$	1,450,448	$	1,160,132	$	914,128

Revenues by Service Offering

Information about the Company’s revenues by service offering is as follows:

	For the Years Ended December 31,
	2017		2016		2015
Software development	$	1,060,286	$	841,916	$	644,732
Application testing services	276,270		223,010		174,259
Application maintenance and support	92,630		74,475		70,551
Licensing	3,529		3,141		3,764
Infrastructure services	595		5,069		11,311
Reimbursable expenses and other revenues	17,138		12,521		9,511
Revenues	$	1,450,448	$	1,160,132	$	914,128