CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - 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 earnings	$ 60,663	$ 62,047	$ 137,344	$ 169,913
Other comprehensive income (loss), net of tax:
Fair value adjustment on derivatives instruments designated as hedges (1)	(604)	(132)	2,557	(1,718)
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax, Portion Attributable to Parent	0	0	0	4
Other Comprehensive Income (Loss), Net of Tax	9,577	(20,085)
Foreign currency translation adjustments	10,181	(19,953)	(12,844)	(22,729)
Total other comprehensive income (loss)	9,577	(20,085)	(10,287)	(24,443)
Comprehensive income	$ 70,240	$ 41,962	$ 127,057	$ 145,470