Condensed Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Total	Common Shares [Member]	Additional Paid-In Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Deficit [Member]
Beginning balance at Dec. 31, 2020	$ 189,100	$ 21,939	$ 300,852	$ (15,773)	$ (117,918)
Stockholders' Equity [Roll Forward]
Net income	18,380	0	0	0	18,380
Foreign currency translation adjustment	881	0	0	881	0
Shares issued under incentive plans, net of shares withheld for tax	1,672	170	1,502	0	0
Stock compensation expense	1,829	0	1,829	0	0
Declared dividends	(9,881)	0	0	0	(9,881)
Ending balance at Jun. 30, 2021	201,981	22,109	304,183	(14,892)	(109,419)
Beginning balance at Mar. 31, 2021	194,253	22,054	303,127	(15,362)	(115,566)
Stockholders' Equity [Roll Forward]
Net income	11,075	0	0	0	11,075
Foreign currency translation adjustment	470	0	0	470	0
Shares issued under incentive plans, net of shares withheld for tax	435	55	380	0	0
Stock compensation expense	676	0	676	0	0
Declared dividends	(4,928)	0	0	0	(4,928)
Ending balance at Jun. 30, 2021	201,981	22,109	304,183	(14,892)	(109,419)
Beginning balance at Dec. 31, 2021	209,325	22,172	306,720	(15,401)	(104,166)
Stockholders' Equity [Roll Forward]
Net income	33,168	0	0	0	33,168
Foreign currency translation adjustment	(609)	0	0	(609)	0
Shares issued under incentive plans, net of shares withheld for tax	1,491	132	1,359	0	0
Stock compensation expense	3,860	0	3,860	0	0
Declared dividends	(9,977)	0	0	0	(9,977)
Ending balance at Jun. 30, 2022	237,258	22,304	311,939	(16,010)	(80,975)
Beginning balance at Mar. 31, 2022	224,138	22,225	308,521	(14,831)	(91,777)
Stockholders' Equity [Roll Forward]
Net income	15,831	0	0	0	15,831
Foreign currency translation adjustment	(1,179)	0	0	(1,179)	0
Shares issued under incentive plans, net of shares withheld for tax	1,364	79	1,285	0	0
Stock compensation expense	2,133	0	2,133	0	0
Declared dividends	(5,029)	0	0	0	(5,029)
Ending balance at Jun. 30, 2022	$ 237,258	$ 22,304	$ 311,939	$ (16,010)	$ (80,975)