Condensed Consolidated Statement of Comprehensive Income Statement - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Condensed Consolidated Statements of Comprehensive Income [Abstract]
Net earnings	$ 42,552	$ 49,292
Other comprehensive loss
Foreign currency translation adjustments, net of tax of $(227) and $(1,038) for the three months ended March 31, 2021 and 2020, respectively	(853)	(3,906)
foreign currency translation tax adjustment	(227)	(1,038)
Total other comprehensive loss	(853)	(3,906)
Comprehensive income	41,699	45,386
Accumulated Other comprehensive Loss [Member]
Other comprehensive loss
Total other comprehensive loss	$ (853)	$ (3,906)