CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 114,801	$ 261,898	$ (43,032)	$ 347,099
Other comprehensive income (loss):
Foreign currency translation adjustments	20,730	13,319	(9,260)	(7,823)
Unrealized gain (loss) on hedging activities, net of income tax provision (benefit) of $85, ($440), ($494) and ($689), respectively	597	(3,081)	(3,456)	(4,822)
Other comprehensive income (loss)	21,327	10,238	(12,716)	(12,645)
Total comprehensive income (loss)	$ 136,128	$ 272,136	$ (55,748)	$ 334,454