Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Consolidated Statements of Comprehensive Income
Net income	$ 151,854	$ 170,358	$ 149,140
Other comprehensive income (loss), net of income tax:
Foreign currency translation adjustment	(21,712)	24,861	(2,836)
Total comprehensive income	130,142	195,219	146,304
Total comprehensive income (loss) attributable to:
Stockholders	130,190	194,899	146,217
Non-controlling interests	(48)	320	87
Total comprehensive income	$ 130,142	$ 195,219	$ 146,304