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
Consolidated Statements of Comprehensive Income (Unaudited) [Abstract]
Net income	$ 56,307	$ 44,090	$ 117,888	$ 133,441
Other comprehensive income, net of tax:
Foreign currency translation adjustment, net of taxes of $(8) and $(31) for the three months ended September 30, 2020 and 2019, respectively, and $(3) and $186 for the nine months ended September 30, 2020 and 2019, respectively	10,022	(13,685)	1,873	(15,027)
Net unrealized gains/(losses) on cash flow hedge, net of tax benefit of $(83) and zero for the three months ended September 30, 2020 and 2019, respectively and $(83) and zero for the nine months ended September 30, 2020 and 2019, respectively.	305	0	305	0
Reclassification adjustment for realized losses/(gains) in current earnings on cash flow hedge, net of taxes of $(2) and zero for the three months ended September 30, 2020 and 2019, respectively and $(2) and zero for the nine months ended September 30, 2020 and 2019, respectively	6	0	6	0
Other comprehensive income, net of tax	10,333	(13,685)	2,184	(15,027)
Comprehensive income	$ 66,640	$ 30,405	$ 120,072	$ 118,414