Summarized quarterly results for the two years ended December 31, 2016 and 2015 were as follows:



	Three Months Ended
2016	March 31			June 30			September 30			December 31			Full Year
Revenues	$	264,482		$	283,832		$	298,293		$	313,525		$	1,160,132
Operating expenses:
Cost of revenues (exclusive of depreciation and amortization)	167,381			180,782			190,797			198,226			737,186
Selling, general and administrative expenses	61,494			64,241			67,491			71,432			264,658
Depreciation and amortization expense	5,102			6,123			5,925			6,237			23,387
Other operating expenses, net	174			606			178			247			1,205
Income from operations	30,331			32,080			33,902			37,383			133,696
Interest and other income, net	1,211			1,138			1,067			1,432			4,848
Foreign exchange loss	(1,290		)	(2,295		)	(1,728		)	(6,765		)	(12,078		)
Income before provision for income taxes	30,252			30,923			33,241			32,050			126,466
Provision for income taxes	6,353			6,493			7,067			7,287			27,200
Net income	$	23,899		$	24,430		$	26,174		$	24,763		$	99,266
Comprehensive income	$	28,598		$	22,044		$	26,532		$	19,554		$	96,728
Basic net income per share⁽¹⁾	$	0.48		$	0.49		$	0.51		$	0.49		$	1.97
Diluted net income per share⁽¹⁾	$	0.45		$	0.46		$	0.49		$	0.46		$	1.87


(1)	Earnings per share amounts for each quarter may not necessarily total to the yearly earnings per share due to the weighting of shares outstanding on a quarterly and year to date basis.



	Three Months Ended
2015	March 31			June 30			September 30			December 31		Full Year
Revenues	$	200,045		$	217,781		$	236,049		$	260,253	$	914,128
Operating expenses:
Cost of revenues (exclusive of depreciation and amortization)	125,887			134,256			148,479			158,291		566,913
Selling, general and administrative expenses	46,938			55,976			55,431			64,414		222,759
Depreciation and amortization expense	4,200			3,903			4,393			4,899		17,395
Other operating expenses/(income), net	200			40			(30		)	884		1,094
Income from operations	22,820			23,606			27,776			31,765		105,967
Interest and other income, net	1,158			1,299			865			1,409		4,731
Foreign exchange (loss)/income	(5,754		)	(465		)	32			1,559		(4,628		)
Income before provision for income taxes	18,224			24,440			28,673			34,733		106,070
Provision for income taxes	3,510			5,209			5,800			7,095		21,614
Net income	$	14,714		$	19,231		$	22,873		$	27,638	$	84,456
Comprehensive income	$	11,984		$	22,905		$	14,532		$	21,939	$	71,360
Basic net income per share⁽¹⁾	$	0.31		$	0.40		$	0.47		$	0.56	$	1.73
Diluted net income per share⁽¹⁾	$	0.29		$	0.37		$	0.44		$	0.52	$	1.62


(1)	Earnings per share amounts for each quarter may not necessarily total to the yearly earnings per share due to the weighting of shares outstanding on a quarterly and year to date basis.