Condensed Consolidated Statement of Shareholders' Equity - 3 months ended Mar. 31, 2018 - 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, 2017	$ 93,752	$ 18,547	$ 209,253	$ (14,541)	$ (119,507)
Stockholders' Equity [Roll Forward]
Net income	6,844	0	0	0	6,844
Foreign currency translation adjustment	(1,720)	0	0	(1,720)	0
Shares issued under incentive plans, net of shares withheld for tax	93	51	42	0	0
Stock compensation expense	953	0	953	0	0
Pension liability, net of tax	201	0	0	201	0
Declared dividends	(4,197)	0	0	0	(4,197)
Ending balance at Mar. 31, 2018	95,926	18,598	210,248	(16,375)	(116,545)
Stockholders' Equity [Roll Forward]
Adoption of ASU 2018-02	$ 0	$ 0	$ 0	$ (315)	$ 315