Consolidated Statements of Comprehensive Income (Unaudited) - 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	$ 119,098	$ 79,525	$ 307,565	$ 243,551
Other comprehensive (loss) income:
Foreign currency translation	2,976	(2,156)	(320)	(734)
Change in unrealized gains (losses) on interest rate swaps, net of change in taxes of $(51), $188, $3,641 and $692	154	(565)	(10,923)	(2,074)
Total other comprehensive income (loss)	3,130	(2,721)	(11,243)	(2,808)
Comprehensive income	$ 122,228	$ 76,804	$ 296,322	$ 240,743