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]	Interest Rate Cap	Interest Rate Cap AOCI Attributable to Parent [Member]	Interest Rate Swap [Member]	Interest Rate Swap [Member] AOCI Attributable to Parent [Member]
Beginning balance at Dec. 31, 2017	$ 188,054	$ 172	$ 107,256	$ 106,599	$ (11,118)	$ (14,855)
Net income	2,632			2,632
Increase (Decrease) in Fair Value of Interest Rate Fair Value Hedging Instruments							$ 148	$ 148	$ 55	$ 55
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent	2,432					2,432
Stock Repurchased During Period, Value	(7,261)				(7,261)
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition	698		698
Stock Issued During Period, Value, Defined Contribution Plan Employer Discretionary Contribution	711		4		707
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures	(51)		(589)		538
Ending balance at Mar. 31, 2018	187,022	172	107,369	108,835	(17,134)	(12,220)
Beginning balance at Dec. 31, 2018	186,569	172	105,850	116,039	(13,802)	(21,690)
Net income	334			334
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	1,713					1,713
Stock Granted, Value, Share-based Compensation, Net of Forfeitures	354		354
Adjustments To Additional Paid In Capital Share Based Compensation Employer Contributions To Retirement Plan	735		(421)		1,156
Stockholders' Equity, Other	9		(874)		883
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent	1,713
Ending balance at Mar. 31, 2019	$ 189,714	$ 172	$ 104,909	$ 116,373	$ (11,763)	$ (19,977)