Condensed Consolidated Statement of Comprehensive Income Statement - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Condensed Consolidated Statements of Comprehensive Income [Abstract]
Net earnings	$ 61,309	$ 38,493	$ 103,861	$ 87,785
Other comprehensive income (loss)
foreign currency translation tax adjustment	238	5	11	(1,034)
Total other comprehensive income (loss)	896	17	43	(3,889)
Comprehensive income	62,205	38,510	103,904	83,896
Accumulated Other comprehensive Loss [Member]
Other comprehensive income (loss)
Total other comprehensive income (loss)	$ 896	$ 17	$ 43	$ (3,889)