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 income (loss)	(2,440)					(2,440)
Other comprehensive (loss) income					146
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				$ (14)
Stock-based compensation (in shares)			9
Stock-based compensation			$ 571
Ending Balance (in shares) at Sep. 30, 2020		2,685	3,672
Ending Balance (in shares) at Sep. 30, 2020				(987)
Ending Balance at Sep. 30, 2020	32,058		$ 486,663	$ (15,325)	(333)	(438,947)
Beginning Balance (in shares) at Jun. 30, 2020		2,685	3,672
Beginning Balance (in shares) at Jun. 30, 2020				(987)
Beginning Balance at Jun. 30, 2020	32,392		$ 486,329	$ (15,325)	(822)	(437,790)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(1,157)					(1,157)
Other comprehensive (loss) income					489
Purchase of treasury stock (in shares)				0
Purchase of treasury stock				$ 0
Purchase of restricted stock from employees (in shares)				0
Purchase of restricted stock from employees				$ 0
Stock-based compensation (in shares)			0
Stock-based compensation			$ 334
Ending Balance (in shares) at Sep. 30, 2020		2,685	3,672
Ending Balance (in shares) at Sep. 30, 2020				(987)
Ending Balance at Sep. 30, 2020	$ 32,058		$ 486,663	$ (15,325)	(333)	(438,947)
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 income (loss)	$ 1,169					1,169
Other comprehensive (loss) income					(710)
Purchase of treasury stock (in shares)				0
Purchase of treasury stock				$ 0
Purchase of restricted stock from employees (in shares)				0
Purchase of restricted stock from employees				$ (4)
Stock-based compensation (in shares)			22
Stock-based compensation			$ 1,795
Ending Balance (in shares) at Sep. 30, 2021	2,707	2,707	3,694
Ending Balance (in shares) at Sep. 30, 2021	987			(987)
Ending Balance at Sep. 30, 2021	$ 36,530		$ 488,624	$ (15,329)	(184)	(436,581)
Beginning Balance (in shares) at Jun. 30, 2021		2,690	3,677
Beginning Balance (in shares) at Jun. 30, 2021				(987)
Beginning Balance at Jun. 30, 2021	34,803		$ 487,925	$ (15,329)	282	(438,075)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	$ 1,494					1,494
Other comprehensive (loss) income					(466)
Purchase of treasury stock (in shares)				0
Purchase of treasury stock				$ 0
Purchase of restricted stock from employees (in shares)				0
Purchase of restricted stock from employees				$ 0
Stock-based compensation (in shares)			17
Stock-based compensation			$ 699
Ending Balance (in shares) at Sep. 30, 2021	2,707	2,707	3,694
Ending Balance (in shares) at Sep. 30, 2021	987			(987)
Ending Balance at Sep. 30, 2021	$ 36,530		$ 488,624	$ (15,329)	$ (184)	$ (436,581)