Condensed Consolidated Statements of Changes in Stockholders' Equity (unaudited) - USD ($) $ in Thousands	Total	Restricted Stock Units	Common stock, par value $0.01 per share	Restricted stock units Restricted Stock Units	Additional paid-in capital	Retained earnings	Accumulated other comprehensive income (loss)	Treasury stock, at cost, par value $0.01 per share
Beginning Balance at Dec. 31, 2020			$ 487	$ 59,412	$ 937,025	$ 95,424	$ (25,501)	$ (978,780)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued			18		29,458
Restricted stock units recognized, net of forfeitures				15,039
Restricted stock units delivered				(30,320)
Dividends						(2,569)
Net income (loss)	$ (6,741)					(6,741)
Currency translation adjustment, net of tax							(1,153)
Repurchased		$ (11,300)						(23,843)
Ending Balance at Jun. 30, 2021	67,956		505	44,131	966,483	86,114	(26,654)	(1,002,623)
Beginning Balance at Mar. 31, 2021			502	41,325	962,651	96,192	(26,052)	(993,324)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued			3		3,832
Restricted stock units recognized, net of forfeitures				6,693
Restricted stock units delivered				(3,887)
Dividends						(1,253)
Net income (loss)	(8,825)					(8,825)
Currency translation adjustment, net of tax							(602)
Repurchased								(9,299)
Ending Balance at Jun. 30, 2021	67,956		505	44,131	966,483	86,114	(26,654)	(1,002,623)
Beginning Balance at Dec. 31, 2021	104,935		506	56,495	969,719	132,559	(30,443)	(1,023,901)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued			18		24,659
Restricted stock units recognized, net of forfeitures				16,403
Restricted stock units delivered				(24,196)
Dividends						(5,140)
Net income (loss)	(30,838)					(30,838)
Currency translation adjustment, net of tax							(5,802)
Repurchased		$ (13,400)						(30,195)
Ending Balance at Jun. 30, 2022	49,844		524	48,702	994,378	96,581	(36,245)	(1,054,096)
Beginning Balance at Mar. 31, 2022			519	45,796	988,215	117,895	(28,523)	(1,043,733)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued			5		6,163
Restricted stock units recognized, net of forfeitures				8,660
Restricted stock units delivered				(5,754)
Dividends						(2,582)
Net income (loss)	(18,732)					(18,732)
Currency translation adjustment, net of tax							(7,722)
Repurchased								(10,363)
Ending Balance at Jun. 30, 2022	$ 49,844		$ 524	$ 48,702	$ 994,378	$ 96,581	$ (36,245)	$ (1,054,096)