Condensed Consolidated Statement of Stockholders Equity Statement - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings	Treasury Stock [Member]	AOCI Attributable to Parent [Member]
Beginning balance at Dec. 31, 2018	$ 186,569	$ 172	$ 105,850	$ 116,039	$ (13,802)	$ (21,690)
Net income (loss)	334
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	1,713
Stock Granted, Value, Share-based Compensation, Net of Forfeitures	354
Adjustments To Additional Paid In Capital Share Based Compensation Employer Contributions To Retirement Plan	735		(421)		1,156
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent	1,713					1,713
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition			354
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures	9		(874)		883
Ending balance at Mar. 31, 2019	189,714	172	104,909	116,373	(11,763)	(19,977)
Net Income (Loss) Available to Common Stockholders, Basic				334
Beginning balance at Dec. 31, 2019	209,914	172	102,319	131,228	(4,070)	(19,735)
Net income (loss)	(1,294)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	(7,155)
Stock Granted, Value, Share-based Compensation, Net of Forfeitures	441
Adjustments To Additional Paid In Capital Share Based Compensation Employer Contributions To Retirement Plan	815		(1,062)		1,877
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent	(7,155)					(7,155)
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition			441
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures	(229)		(1,048)		819
Ending balance at Mar. 31, 2020	$ 202,492	$ 172	$ 100,650	129,934	$ (1,374)	$ (26,890)
Net Income (Loss) Available to Common Stockholders, Basic				$ (1,294)