CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 148,234	$ 102,276	$ 105,202	$ 449,375
Other comprehensive income (loss):
Foreign currency translation adjustments	47,139	(48,448)	37,879	(56,271)
Unrealized gain (loss) on hedging activities, net of income tax provision (benefit) of $167, ($80), ($327) and ($769), respectively	1,169	(558)	(2,287)	(5,380)
Other comprehensive income (loss)	48,308	(49,006)	35,592	(61,651)
Total comprehensive income	$ 196,542	$ 53,270	$ 140,794	$ 387,724