CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE EARNINGS (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Income Statement [Abstract]
NET INCOME	$ 98,854	$ 75,358	$ 191,497	$ 118,626
Other comprehensive earnings / (loss)
Foreign currency translation adjustments	704	9,378	283	(7,490)
Change in derivatives, net of tax	(439)	170	(276)	(564)
Other comprehensive earnings / (loss)	265	9,548	7	(8,054)
Comprehensive earnings	$ 99,119	$ 84,906	$ 191,504	$ 110,572