CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Common stock and additional paid-in capital	Treasury Stock	Accumulated other comprehensive (loss) income	Retained Earnings
Beginning Balance (in shares) at Dec. 31, 2019		2,936	3,663
Beginning Balance (in shares) at Dec. 31, 2019				(726)
Beginning Balance at Dec. 31, 2019	$ 36,034		$ 486,092	$ (13,072)	$ (479)	$ (436,507)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(511)					(511)
Other comprehensive loss					(787)
Purchase of treasury stock (in shares)				(260)
Purchase of treasury stock				$ (2,239)
Purchase of restricted stock from employees (in shares)				(1)
Purchase of restricted stock from employees				$ (11)
Stock-based compensation (in shares)			6
Stock-based compensation			$ 144
Ending Balance (in shares) at Mar. 31, 2020		2,682	3,669
Ending Balance (in shares) at Mar. 31, 2020				(987)
Ending Balance at Mar. 31, 2020	$ 32,630		$ 486,236	$ (15,322)	(1,266)	(437,018)
Beginning Balance (in shares) at Dec. 31, 2020	2,685	2,685	3,672
Beginning Balance (in shares) at Dec. 31, 2020	987			(987)
Beginning Balance at Dec. 31, 2020	$ 34,280		$ 486,829	$ (15,325)	526	(437,750)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	$ (203)					(203)
Other comprehensive loss					(226)
Purchase of treasury stock (in shares)				0
Purchase of treasury stock				$ (2)
Purchase of restricted stock from employees (in shares)				0
Purchase of restricted stock from employees				$ 0
Stock-based compensation (in shares)			3
Stock-based compensation			$ 302
Ending Balance (in shares) at Mar. 31, 2021	2,688	2,688	3,675
Ending Balance (in shares) at Mar. 31, 2021	987			(987)
Ending Balance at Mar. 31, 2021	$ 34,151		$ 487,131	$ (15,327)	$ 300	$ (437,953)