Quarterly Financial Results (unaudited)

12 Months Ended

Dec. 31, 2017

Quarterly Financial Information Disclosure [Abstract]

Quarterly Financial Results (unaudited)

Quarterly Financial Results (unaudited)

(in thousands, except per share data)	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
Year ended December 31, 2017:
Revenue	$	609,237	$	608,908	$	621,399	$	663,452
Cost of revenue (exclusive of amortization of acquired intangible assets)	205,703		214,650		225,468		229,937
Net income	80,930		57,772		60,512		19,107
Basic net income per share	0.47		0.33		0.35		0.11
Diluted net income per share	0.46		0.33		0.35		0.11
Year ended December 31, 2016:
Revenue	$	567,725	$	572,135	$	584,065	$	616,124
Cost of revenue (exclusive of amortization of acquired intangible assets)	194,736		206,323		204,467		203,475
Net income	74,858		73,635		76,000		91,639
Basic net income per share	0.42		0.42		0.44		0.53
Diluted net income per share	0.42		0.42		0.43		0.52