Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 31,667	$ 40,518	$ 123,385
Other comprehensive income (loss):
Foreign currency translation	148	(74)	(87)
Total other comprehensive income (loss)	148	(74)	(87)
Comprehensive income	$ 31,815	$ 40,444	$ 123,298