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, 2018		3,190	3,613
Beginning Balance (in shares) at Dec. 31, 2018				(423)
Beginning Balance at Dec. 31, 2018	$ 40,487		$ 485,131	$ (8,486)	$ (606)	$ (435,552)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(2,438)					(2,438)
Other comprehensive income (loss)					(379)
Treasury Stock, Shares, Acquired				(296)
Treasury Stock, Value, Acquired, Cost Method				$ (4,482)
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation				(2)
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation				$ (41)
Stock-based compensation (in shares)			47
Stock-based compensation			$ 811
Ending Balance (in shares) at Sep. 30, 2019		2,939	3,660
Ending Balance (in shares) at Sep. 30, 2019				(721)
Ending Balance at Sep. 30, 2019	33,958		$ 485,942	$ (13,009)	(985)	(437,990)
Beginning Balance (in shares) at Jun. 30, 2019		2,960	3,658
Beginning Balance (in shares) at Jun. 30, 2019				(698)
Beginning Balance at Jun. 30, 2019	34,001		$ 485,740	$ (12,738)	(647)	(438,354)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	364					364
Other comprehensive income (loss)					(338)
Treasury Stock, Shares, Acquired				(23)
Treasury Stock, Value, Acquired, Cost Method				$ (270)
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation				0
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation				$ (1)
Stock-based compensation (in shares)			2
Stock-based compensation			$ 202
Ending Balance (in shares) at Sep. 30, 2019		2,939	3,660
Ending Balance (in shares) at Sep. 30, 2019				(721)
Ending Balance at Sep. 30, 2019	$ 33,958		$ 485,942	$ (13,009)	(985)	(437,990)
Beginning Balance (in shares) at Dec. 31, 2019	2,937	2,936	3,663
Beginning Balance (in shares) at Dec. 31, 2019	726			(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) income	$ (2,440)					(2,440)
Other comprehensive income (loss)					146
Treasury Stock, Shares, Acquired				(260)
Treasury Stock, Value, Acquired, Cost Method				$ (2,239)
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation				(1)
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation				$ (14)
Stock-based compensation (in shares)			9
Stock-based compensation			$ 571
Ending Balance (in shares) at Sep. 30, 2020	2,685	2,685	3,672
Ending Balance (in shares) at Sep. 30, 2020	987			(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 (loss) income	$ (1,157)					(1,157)
Other comprehensive income (loss)					489
Treasury Stock, Shares, Acquired				0
Treasury Stock, Value, Acquired, Cost Method				$ 0
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation				0
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation				$ 0
Stock-based compensation (in shares)			0
Stock-based compensation			$ 334
Ending Balance (in shares) at Sep. 30, 2020	2,685	2,685	3,672
Ending Balance (in shares) at Sep. 30, 2020	987			(987)
Ending Balance at Sep. 30, 2020	$ 32,058		$ 486,663	$ (15,325)	$ (333)	$ (438,947)