Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (164,761)	$ (15,320)	$ 26,769
Other comprehensive income (loss):
Change in unrealized gains (losses) on investments, net of tax	(2,527)	(466)	54
Change in unrealized gains on cash flow hedges	11,802	0	0
Change in foreign currency translation adjustment	47	(46)	0
Total other comprehensive income (loss)	9,322	(512)	54
Comprehensive income (loss)	(155,439)	(15,832)	26,823
Accretion of redeemable noncontrolling interest	(1,383)	(427)	0
Comprehensive income (loss) attributable to common stockholders	$ (156,822)	$ (16,259)	$ 26,823