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, 2018	$ 154,638	$ 21,547	$ 292,558	$ (18,280)	$ (141,187)
Stockholders' Equity [Roll Forward]
Net income	6,770	0	0	0	6,770
Foreign currency translation adjustment	777	0	0	777	0
Shares issued under incentive plans, net of shares withheld for tax	(828)	80	(908)	0	0
Stock compensation expense	958	0	958	0	0
Declared dividends	(4,794)	0	0	0	(4,794)
Ending balance at Mar. 31, 2019	158,426	21,627	292,608	(17,503)	(138,306)
Stockholders' Equity [Roll Forward]
Adoption of ASU | ASU 2016-02 [Member]	905	0	0	0	905
Beginning balance at Dec. 31, 2019	166,682	21,785	296,363	(16,349)	(135,117)
Stockholders' Equity [Roll Forward]
Net income	16,726	0	0	0	16,726
Foreign currency translation adjustment	(2,755)	0	0	(2,755)	0
Shares issued under incentive plans, net of shares withheld for tax	(237)	43	(280)	0	0
Stock compensation expense	653	0	653	0	0
Declared dividends	(4,846)	0	0	0	(4,846)
Ending balance at Mar. 31, 2020	$ 176,223	$ 21,828	$ 296,736	$ (19,104)	$ (123,237)