Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statement of Comprehensive Income [Abstract]
Net Income (Loss) Attributable to Parent	$ 122,986	$ 52,953	$ 28,892
Other comprehensive income (loss), net of tax
Currency translation adjustment	1,687	1,596	(1,417)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent, Total	$ 124,673	$ 54,549	$ 27,475