The Company’s revenues are sourced from four geographic markets: North America, Europe, CIS and APAC. CIS includes revenues from customers in Belarus, Kazakhstan, Russia and Ukraine, and APAC, which stands for Asia Pacific, includes revenues from customers in East Asia, Southeast Asia and Australia. The following tables present the disaggregation of the Company’s revenues by customer location, including a reconciliation of the disaggregated revenues with the reportable segments (Note 13 “Segment Information”) for the periods indicated:



	Three Months Ended June 30, 2019
	Reportable Segments
	North America		Europe		Russia		Total Segment Revenues		Other Income Included in Segment Revenues			Consolidated Revenues
Customer Locations
North America	$	323,221	$	11,553	$	16	$	334,790	$	(2	)	$	334,788
Europe	5,233		172,099		99		177,431		(86		)	177,345
CIS	2,005		—		23,086		25,091		—			25,091
APAC	580		13,800		—		14,380		(17		)	14,363
Revenues	$	331,039	$	197,452	$	23,201	$	551,692	$	(105	)	$	551,587



	Six Months Ended June 30, 2019
	Reportable Segments
	North America		Europe		Russia		Total Segment Revenues		Other Income Included in Segment Revenues			Consolidated Revenues
Customer Locations
North America	$	626,966	$	24,444	$	32	$	651,442	$	(2	)	$	651,440
Europe	9,980		340,866		240		351,086		(233		)	350,853
CIS	3,744		13		39,509		43,266		(1		)	43,265
APAC	1,038		26,352		—		27,390		(28		)	27,362
Revenues	$	641,728	$	391,675	$	39,781	$	1,073,184	$	(264	)	$	1,072,920



	Three Months Ended June 30, 2018
	Reportable Segments
	North America		Europe		Russia		Total Segment Revenues		Other Income Included in Segment Revenues			Consolidated Revenues
Customer Locations
North America	$	250,273	$	14,177	$	14	$	264,464	$	(13	)	$	264,451
Europe	3,086		146,998		—		150,084		(280		)	149,804
CIS	2,089		28		17,294		19,411		—			19,411
APAC	1,655		10,292		72		12,019		(38		)	11,981
Revenues	$	257,103	$	171,495	$	17,380	$	445,978	$	(331	)	$	445,647



	Six Months Ended June 30, 2018
	Reportable Segments
	North America		Europe		Russia		Total Segment Revenues		Other Income Included in Segment Revenues			Consolidated Revenues
Customer Locations
North America	$	476,343	$	27,538	$	29	$	503,910	$	(13	)	$	503,897
Europe	5,826		297,478		42		303,346		(457		)	302,889
CIS	4,092		91		37,008		41,191		—			41,191
APAC	2,038		19,731		87		21,856		(38		)	21,818
Revenues	$	488,299	$	344,838	$	37,166	$	870,303	$	(508	)	$	869,795

The following tables present the disaggregation of the Company’s revenues by industry vertical, including a reconciliation of the disaggregated revenues with the reportable segments (Note 13 “Segment Information”) for the periods indicated:



	Three Months Ended June 30, 2019
	Reportable Segments
	North America		Europe		Russia		Total Segment Revenues		Other Income Included in Segment Revenues			Consolidated Revenues
Industry Verticals
Financial Services	$	43,531	$	58,966	$	18,009	$	120,506	$	(101	)	$	120,405
Travel & Consumer	48,178		56,175		2,761		107,114		—			107,114
Software & Hi-Tech	85,600		19,442		478		105,520		(2		)	105,518
Business Information & Media	62,340		35,692		104		98,136		(1		)	98,135
Life Sciences & Healthcare	54,287		4,907		4		59,198		—			59,198
Emerging Verticals	37,103		22,270		1,845		61,218		(1		)	61,217
Revenues	$	331,039	$	197,452	$	23,201	$	551,692	$	(105	)	$	551,587



	Six Months Ended June 30, 2019
	Reportable Segments
	North America		Europe		Russia		Total Segment Revenues		Other Income Included in Segment Revenues			Consolidated Revenues
Industry Verticals
Financial Services	$	81,925	$	120,954	$	31,041	$	233,920	$	(254	)	$	233,666
Travel & Consumer	95,178		111,377		4,885		211,440		—			211,440
Software & Hi-Tech	164,721		39,812		918		205,451		(2		)	205,449
Business Information & Media	124,701		68,228		244		193,173		(6		)	193,167
Life Sciences & Healthcare	104,443		9,463		66		113,972		—			113,972
Emerging Verticals	70,760		41,841		2,627		115,228		(2		)	115,226
Revenues	$	641,728	$	391,675	$	39,781	$	1,073,184	$	(264	)	$	1,072,920



	Three Months Ended June 30, 2018
	Reportable Segments
	North America		Europe		Russia		Total Segment Revenues		Other Income Included in Segment Revenues			Consolidated Revenues
Industry Verticals
Financial Services	$	26,732	$	62,496	$	14,091	$	103,319	$	(331	)	$	102,988
Travel & Consumer	47,104		52,120		1,792		101,016		—			101,016
Software & Hi-Tech	64,536		19,857		624		85,017		—			85,017
Business Information & Media	59,532		18,117		—		77,649		—			77,649
Life Sciences & Healthcare	32,876		5,649		—		38,525		—			38,525
Emerging Verticals	26,323		13,256		873		40,452		—			40,452
Revenues	$	257,103	$	171,495	$	17,380	$	445,978	$	(331	)	$	445,647



	Six Months Ended June 30, 2018
	Reportable Segments
	North America		Europe		Russia		Total Segment Revenues		Other Income Included in Segment Revenues			Consolidated Revenues
Industry Verticals
Financial Services	$	48,688	$	128,314	$	30,316	$	207,318	$	(508	)	$	206,810
Travel & Consumer	87,791		101,574		3,465		192,830		—			192,830
Software & Hi-Tech	125,100		40,151		1,388		166,639		—			166,639
Business Information & Media	116,869		36,987		—		153,856		—			153,856
Life Sciences & Healthcare	60,343		10,472		—		70,815		—			70,815
Emerging Verticals	49,508		27,340		1,997		78,845		—			78,845
Revenues	$	488,299	$	344,838	$	37,166	$	870,303	$	(508	)	$	869,795

The following tables present the disaggregation of the Company’s revenues by contract type including a reconciliation of the disaggregated revenues with the Company’s reportable segments (Note 13 “Segment Information”) for the periods indicated:



	Three Months Ended June 30, 2019
	Reportable Segments
	North America		Europe		Russia		Total Segment Revenues		Other Income Included in Segment Revenues			Consolidated Revenues
Contract Types
Time-and-material	$	300,326	$	167,581	$	12,047	$	479,954	$	—		$	479,954
Fixed-price	29,681		29,204		10,943		69,828		—			69,828
Licensing	624		142		196		962		—			962
Other revenues	408		525		15		948		(105		)	843
Revenues	$	331,039	$	197,452	$	23,201	$	551,692	$	(105	)	$	551,587



	Six Months Ended June 30, 2019
	Reportable Segments
	North America		Europe		Russia		Total Segment Revenues		Other Income Included in Segment Revenues			Consolidated Revenues
Contract Types
Time-and-material	$	585,051	$	335,794	$	23,319	$	944,164	$	—		$	944,164
Fixed-price	54,421		54,450		16,230		125,101		—			125,101
Licensing	1,460		540		202		2,202		—			2,202
Other revenues	796		891		30		1,717		(264		)	1,453
Revenues	$	641,728	$	391,675	$	39,781	$	1,073,184	$	(264	)	$	1,072,920



	Three Months Ended June 30, 2018
	Reportable Segments
	North America		Europe		Russia		Total Segment Revenues		Other Income Included in Segment Revenues			Consolidated Revenues
Contract Types
Time-and-material	$	233,747	$	156,637	$	9,765	$	400,149	$	—		$	400,149
Fixed-price	22,483		14,081		7,607		44,171		—			44,171
Licensing	638		327		1		966		—			966
Other revenues	235		450		7		692		(331		)	361
Revenues	$	257,103	$	171,495	$	17,380	$	445,978	$	(331	)	$	445,647



	Six Months Ended June 30, 2018
	Reportable Segments
	North America		Europe		Russia		Total Segment Revenues		Other Income Included in Segment Revenues			Consolidated Revenues
Contract Types
Time-and-material	$	448,063	$	316,103	$	19,861	$	784,027	$	—		$	784,027
Fixed-price	38,475		27,034		17,279		82,788		—			82,788
Licensing	1,300		946		11		2,257		—			2,257
Other revenues	461		755		15		1,231		(508		)	723
Revenues	$	488,299	$	344,838	$	37,166	$	870,303	$	(508	)	$	869,795



	Three Months Ended June 30, 2019
	Reportable Segments
	North America		Europe		Russia		Total Segment Revenues		Other Income Included in Segment Revenues			Consolidated Revenues
Timing of Revenue Recognition
Transferred at a point of time	$	220	$	197	$	—	$	417	$	(105	)	$	312
Transferred over time	330,819		197,255		23,201		551,275		—			551,275
Revenues	$	331,039	$	197,452	$	23,201	$	551,692	$	(105	)	$	551,587



	Six Months Ended June 30, 2019
	Reportable Segments
	North America		Europe		Russia		Total Segment Revenues		Other Income Included in Segment Revenues			Consolidated Revenues
Timing of Revenue Recognition
Transferred at a point of time	$	624	$	402	$	1	$	1,027	$	(264	)	$	763
Transferred over time	641,104		391,273		39,780		1,072,157		—			1,072,157
Revenues	$	641,728	$	391,675	$	39,781	$	1,073,184	$	(264	)	$	1,072,920



	Three Months Ended June 30, 2018
	Reportable Segments
	North America		Europe		Russia		Total Segment Revenues		Other Income Included in Segment Revenues			Consolidated Revenues
Timing of Revenue Recognition
Transferred at a point of time	$	294	$	634	$	—	$	928	$	(331	)	$	597
Transferred over time	256,809		170,861		17,380		445,050		—			445,050
Revenues	$	257,103	$	171,495	$	17,380	$	445,978	$	(331	)	$	445,647



	Six Months Ended June 30, 2018
	Reportable Segments
	North America		Europe		Russia		Total Segment Revenues		Other Income Included in Segment Revenues			Consolidated Revenues
Timing of Revenue Recognition
Transferred at a point of time	$	638	$	1,062	$	10	$	1,710	$	(508	)	$	1,202
Transferred over time	487,661		343,776		37,156		868,593		—			868,593
Revenues	$	488,299	$	344,838	$	37,166	$	870,303	$	(508	)	$	869,795

During the three and six months ended June 30, 2019 the Company recognized $7,693 and $4,119 of revenues, respectively, from performance obligations satisfied in previous periods compared to $5,452 and $6,618 during the three and six months ended June 30, 2018, respectively.

The following table includes the estimated revenues expected to be recognized in the future related to performance obligations that are partially or fully unsatisfied as of June 30, 2019. The Company applies a practical expedient and does not disclose the value of unsatisfied performance obligations for contracts that (i) have an original expected duration of one year or less and (ii) contracts for which it recognizes revenues at the amount to which it has the right to invoice for services provided:



	Less than 1 year		1 Year		2 Years		3 Years		Total
Contract Type
Fixed-price	$	10,534	$	4,104	$	217	$	—	$	14,855

The Company applies a practical expedient and does not disclose the amount of the transaction price allocated to the remaining performance obligations nor provide an explanation of when the Company expects to recognize that amount as revenue for certain variable consideration.

The following table provides information on the classification of contract assets and liabilities in the condensed consolidated balance sheets:



	As of June 30, 2019		As of December 31, 2018
Contract assets included in Unbilled revenues	$	23,381	$	13,522
Contract liabilities included in Accrued expenses and other current liabilities	$	6,321	$	4,558
Contract liabilities included in Other noncurrent liabilities	$	3	$	224

Contract assets included in Unbilled revenues are recorded when services have been provided but the Company does not have an unconditional right to receive consideration. The Company recognizes an impairment loss when the contract carrying amount is greater than the remaining consideration expected less the remaining costs of providing services. Contract assets have increased from December 31, 2018 primarily due to new contracts entered into in 2019 where the Company’s right to bill is contingent upon achievement of contractual milestones.