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	(1,283)					(1,283)
Other comprehensive loss					(343)
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			$ 237
Ending Balance (in shares) at Jun. 30, 2020		2,685	3,672
Ending Balance (in shares) at Jun. 30, 2020				(987)
Ending Balance at Jun. 30, 2020	32,392		$ 486,329	$ (15,325)	(822)	(437,790)
Beginning Balance (in shares) at Mar. 31, 2020		2,682	3,669
Beginning Balance (in shares) at Mar. 31, 2020				(987)
Beginning Balance at Mar. 31, 2020	32,630		$ 486,236	$ (15,322)	(1,266)	(437,018)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(772)					(772)
Other comprehensive loss					444
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				$ (3)
Stock-based compensation (in shares)			3
Stock-based compensation			$ 93
Ending Balance (in shares) at Jun. 30, 2020		2,685	3,672
Ending Balance (in shares) at Jun. 30, 2020				(987)
Ending Balance at Jun. 30, 2020	$ 32,392		$ 486,329	$ (15,325)	(822)	(437,790)
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	$ (325)					(325)
Other comprehensive loss					(244)
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)			5
Stock-based compensation			$ 1,096
Ending Balance (in shares) at Jun. 30, 2021	2,690	2,690	3,677
Ending Balance (in shares) at Jun. 30, 2021	987			(987)
Ending Balance at Jun. 30, 2021	$ 34,803		$ 487,925	$ (15,329)	282	(438,075)
Beginning Balance (in shares) at Mar. 31, 2021		2,688	3,675
Beginning Balance (in shares) at Mar. 31, 2021				(987)
Beginning Balance at Mar. 31, 2021	34,151		$ 487,131	$ (15,327)	300	(437,953)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	$ (122)					(122)
Other comprehensive loss					(18)
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				$ (2)
Stock-based compensation (in shares)			2
Stock-based compensation			$ 794
Ending Balance (in shares) at Jun. 30, 2021	2,690	2,690	3,677
Ending Balance (in shares) at Jun. 30, 2021	987			(987)
Ending Balance at Jun. 30, 2021	$ 34,803		$ 487,925	$ (15,329)	$ 282	$ (438,075)