Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Total	Common stock	Restricted stock units Restricted stock units	Additional paid-in capital	Exchangeable shares of subsidiary	Retained earnings	Retained earnings Cumulative effect of the change in accounting principle	Retained earnings Retained earnings, beginning of the period, as adjusted	Accumulated other comprehensive income (loss)	Treasury stock	Parent
Beginning Balance at Dec. 31, 2018		$ 450	$ 71,596	$ 846,721	$ 1,958	$ 63,427		$ 63,427	$ (35,705)	$ (886,084)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued		18		41,582
Restricted stock units recognized, net of forfeitures			46,382
Restricted stock units delivered			(40,321)
Tax effect of issuance of contingent equity earnout				(1,208)
Exchangeable shares of subsidiary delivered					(1,958)
Accounting Standards Update [Extensible Enumeration]	Accounting Standards Update 2016-13 [Member]
Dividends						(5,312)
Net income	$ 10,978					10,978
Currency translation adjustment, net of tax	1,590								1,590
Repurchased										(69,439)
Ending Balance at Dec. 31, 2019		468	77,657	887,095	0	69,093	$ (123)	68,970	(34,115)	(955,523)	$ 44,675
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued		19		49,930
Restricted stock units recognized, net of forfeitures			31,950
Restricted stock units delivered			(50,195)
Tax effect of issuance of contingent equity earnout				0
Exchangeable shares of subsidiary delivered					0
Dividends						(4,880)
Net income	31,334					31,334
Currency translation adjustment, net of tax	8,614								8,614
Repurchased										(23,257)
Ending Balance at Dec. 31, 2020	88,067	487	59,412	937,025	0	95,424		$ 95,424	(25,501)	(978,780)	88,067
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued		19		32,694
Restricted stock units recognized, net of forfeitures			31,110
Restricted stock units delivered			(34,027)
Tax effect of issuance of contingent equity earnout				0
Exchangeable shares of subsidiary delivered					0
Dividends						(5,177)
Net income	42,312					42,312
Currency translation adjustment, net of tax	(4,942)								(4,942)
Repurchased										(45,121)
Ending Balance at Dec. 31, 2021	$ 104,935	$ 506	$ 56,495	$ 969,719	$ 0	$ 132,559			$ (30,443)	$ (1,023,901)	$ 104,935