Consolidated Statements of Changes in Equity - USD ($) $ in Thousands	Total	Common Shares	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Shares	Non-Controlling Interest	Common Stock Outstanding
Balance at Beginning of Period at Dec. 31, 2018	$ 160,900	$ 1,148	$ 57,438	$ 156,130	$ (5,456)	$ (52,501)	$ 4,141
Balance at Beginning of Period (shares) at Dec. 31, 2018		44,796,252				(479,407)		44,316,845
Stock-based compensation	20,879		(5,566)			$ 26,445
Stock-based compensation (shares)						220,417		220,417
Repurchase of common shares	(3,308)					$ (3,308)
Repurchase of common shares (shares)						(71,700)		(71,700)
Dividends paid	(97,574)			(97,574)
Pension and other post retirement benefit plans, net of income tax	10				10
Interest rate swaps, net of income tax	(884)				(884)
Net income (loss)	102,117			101,983			134
Balance at End of Period at Dec. 31, 2019	$ 182,140	$ 1,148	51,872	160,539	(6,330)	$ (29,364)	4,275
Balance at End of Period (shares) at Dec. 31, 2019		44,796,252				(330,690)		44,465,562
Cash Dividends per Share	$ 2.20
Stock-based compensation	$ 7,394		(10,688)			$ 18,082
Stock-based compensation (shares)						208,168		208,168
Repurchase of common shares	(2,793)					$ (2,793)
Repurchase of common shares (shares)						(100,929)		(100,929)
Dividends paid	(12,446)			(12,446)
Non-controlling interest additions	(355)						(355)
Pension and other post retirement benefit plans, net of income tax	265				265
Interest rate swaps, net of income tax	(1,135)				(1,135)
Net income (loss)	(97,497)			(97,637)			140
Balance at End of Period at Dec. 31, 2020	$ 75,573	$ 1,148	41,184	50,456	(7,200)	$ (14,075)	4,060
Balance at End of Period (shares) at Dec. 31, 2020	44,572,801	44,796,252				(223,451)		44,572,801
Cash Dividends per Share	$ 0.28
New share issuance	$ 59,139	$ 40	59,099
New share issuance (Shares)	1,658,012	1,658,012
Stock-based compensation	$ 19,093		837			$ 18,256
Stock-based compensation (shares)	419,152					419,152		419,152
Repurchase of common shares	$ (8,256)					$ (8,256)
Repurchase of common shares (shares)	300,568					(300,568)		(300,568)
Dividends paid	$ (1,834)			(1,834)
Pension and other post retirement benefit plans, net of income tax	(220)				(220)
Interest rate swaps, net of income tax	(2,713)				(2,713)
Net income (loss)	20,219			19,727			492
Balance at End of Period at Dec. 31, 2021	$ 161,001	$ 1,188	$ 101,120	$ 68,349	$ (10,133)	$ (4,075)	$ 4,552
Balance at End of Period (shares) at Dec. 31, 2021		46,454,264				(104,867)		46,349,397
Cash Dividends per Share	$ 0.04