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) Available to Common Stockholders, Basic				3,553
Net income (loss)	3,553
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent	1,333					1,333
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	1,333
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition			956
Stock Granted, Value, Share-based Compensation, Net of Forfeitures	956
Adjustments To Additional Paid In Capital Share Based Compensation Employer Contributions To Retirement Plan	1,463		(961)		2,424
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures	(110)		(1,658)		1,548
Ending balance at Jun. 30, 2019	193,764	172	104,187	119,592	(9,830)	(20,357)
Beginning balance at Mar. 31, 2019	189,714	172	104,909	116,373	(11,763)	(19,977)
Net Income (Loss) Available to Common Stockholders, Basic				3,219
Net income (loss)	3,219
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent	(380)					(380)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	(380)
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition			602
Stock Granted, Value, Share-based Compensation, Net of Forfeitures	602
Adjustments To Additional Paid In Capital Share Based Compensation Employer Contributions To Retirement Plan	728		(540)		1,268
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures	(119)		(784)		665
Ending balance at Jun. 30, 2019	193,764	172	104,187	119,592	(9,830)	(20,357)
Beginning balance at Dec. 31, 2019	209,914	172	102,319	131,228	(4,070)	(19,735)
Net Income (Loss) Available to Common Stockholders, Basic				(1,900)
Net income (loss)	(1,900)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent	(5,681)					(5,681)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	(5,681)
Treasury Stock, Value, Acquired, Cost Method	(1,826)				(1,826)
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition			1,213
Stock Granted, Value, Share-based Compensation, Net of Forfeitures	1,213
Adjustments To Additional Paid In Capital Share Based Compensation Employer Contributions To Retirement Plan	1,579		(1,573)		3,152
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures	(558)		(1,936)		1,378
Ending balance at Jun. 30, 2020	202,741	172	100,023	129,328	(1,366)	(25,416)
Beginning balance at Mar. 31, 2020	202,492	172	100,650	129,934	(1,374)	(26,890)
Net Income (Loss) Available to Common Stockholders, Basic				(606)
Net income (loss)	(606)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent	1,474					1,474
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	1,474
Treasury Stock, Value, Acquired, Cost Method	(1,826)				(1,826)
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition			772
Stock Granted, Value, Share-based Compensation, Net of Forfeitures	772
Adjustments To Additional Paid In Capital Share Based Compensation Employer Contributions To Retirement Plan	764		(511)		1,275
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures	(329)		(888)		559
Ending balance at Jun. 30, 2020	$ 202,741	$ 172	$ 100,023	$ 129,328	$ (1,366)	$ (25,416)