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, 2017		3,116	3,496
Beginning Balance (in shares) at Dec. 31, 2017				(380)
Beginning Balance at Dec. 31, 2017	$ 43,152		$ 483,592	$ (7,730)	$ 10,709	$ (443,419)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	8,487					8,487
Other comprehensive loss					(11,108)
Treasury Stock, Shares, Acquired				0
Treasury Stock, Value, Acquired, Cost Method				$ (3)
Shares Paid for Tax Withholding for Share Based Compensation				(28)
Adjustments Related to Tax Withholding for Share-based Compensation				$ (548)
Stock-based compensation (in shares)			117
Stock-based compensation			$ 1,332
Ending Balance (in shares) at Sep. 30, 2018		3,205	3,613
Ending Balance (in shares) at Sep. 30, 2018				(408)
Ending Balance at Sep. 30, 2018	41,312		$ 484,924	$ (8,281)	(399)	(434,932)
Beginning Balance (in shares) at Jun. 30, 2018		3,203	3,611
Beginning Balance (in shares) at Jun. 30, 2018				(408)
Beginning Balance at Jun. 30, 2018	41,893		$ 484,466	$ (8,267)	(244)	(434,062)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(870)					(870)
Other comprehensive loss					(155)
Treasury Stock, Shares, Acquired				0
Treasury Stock, Value, Acquired, Cost Method				$ 0
Shares Paid for Tax Withholding for Share Based Compensation				0
Adjustments Related to Tax Withholding for Share-based Compensation				$ (14)
Stock-based compensation (in shares)			2
Stock-based compensation			$ 458
Ending Balance (in shares) at Sep. 30, 2018		3,205	3,613
Ending Balance (in shares) at Sep. 30, 2018				(408)
Ending Balance at Sep. 30, 2018	$ 41,312		$ 484,924	$ (8,281)	(399)	(434,932)
Beginning Balance (in shares) at Dec. 31, 2018	3,190	3,190	3,613
Beginning Balance (in shares) at Dec. 31, 2018	423			(423)
Beginning Balance at Dec. 31, 2018	$ 40,487		$ 485,131	$ (8,486)	(606)	(435,552)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	$ (2,438)					(2,438)
Other comprehensive loss					(379)
Treasury Stock, Shares, Acquired				(296)
Treasury Stock, Value, Acquired, Cost Method				$ (4,482)
Shares Paid for Tax Withholding for Share Based Compensation				(2)
Adjustments Related to Tax Withholding for Share-based Compensation				$ (41)
Stock-based compensation (in shares)			47
Stock-based compensation			$ 811
Ending Balance (in shares) at Sep. 30, 2019	2,939	2,939	3,660
Ending Balance (in shares) at Sep. 30, 2019	721			(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 income (loss)	$ 364					364
Other comprehensive loss					(338)
Treasury Stock, Shares, Acquired				(23)
Treasury Stock, Value, Acquired, Cost Method				$ (270)
Shares Paid for Tax Withholding for Share Based Compensation				0
Adjustments Related to Tax Withholding for Share-based Compensation				$ (1)
Stock-based compensation (in shares)			2
Stock-based compensation			$ 202
Ending Balance (in shares) at Sep. 30, 2019	2,939	2,939	3,660
Ending Balance (in shares) at Sep. 30, 2019	721			(721)
Ending Balance at Sep. 30, 2019	$ 33,958		$ 485,942	$ (13,009)	$ (985)	$ (437,990)