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		3,876	3,496
Beginning Balance (in shares) at Dec. 31, 2017				380
Beginning Balance at Dec. 31, 2017	$ 40,152		$ 483,592	$ (7,730)	$ 10,709	$ (443,419)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	9,357					9,357
Other comprehensive loss					(10,953)
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				$ (534)
Stock-based compensation (in shares)			115
Stock-based compensation			$ 874
Ending Balance (in shares) at Jun. 30, 2018		4,019	3,611
Ending Balance (in shares) at Jun. 30, 2018				408
Ending Balance at Jun. 30, 2018	41,893		$ 484,466	$ (8,267)	(244)	(434,062)
Beginning Balance (in shares) at Mar. 31, 2018		3,925	3,541
Beginning Balance (in shares) at Mar. 31, 2018				384
Beginning Balance at Mar. 31, 2018	43,978		$ 484,288	$ (7,797)	185	(432,698)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(1,364)					(1,364)
Other comprehensive loss					(429)
Treasury Stock, Shares, Acquired				0
Treasury Stock, Value, Acquired, Cost Method				$ (3)
Shares Paid for Tax Withholding for Share Based Compensation				24
Adjustments Related to Tax Withholding for Share-based Compensation				$ (467)
Stock-based compensation (in shares)			70
Stock-based compensation			$ 178
Ending Balance (in shares) at Jun. 30, 2018		4,019	3,611
Ending Balance (in shares) at Jun. 30, 2018				408
Ending Balance at Jun. 30, 2018	$ 41,893		$ 484,466	$ (8,267)	(244)	(434,062)
Beginning Balance (in shares) at Dec. 31, 2018	3,190	4,036	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]
Shares Paid for Tax Withholding for Share Based Compensation				0
Ending Balance (in shares) at Mar. 31, 2019		4,305	3,622
Ending Balance (in shares) at Mar. 31, 2019				683
Ending Balance at Mar. 31, 2019	$ 34,816		$ 485,315	$ (12,504)	(541)	(437,454)
Beginning Balance (in shares) at Dec. 31, 2018	3,190	4,036	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 (loss) income	$ (2,802)					(2,802)
Other comprehensive loss					(41)
Treasury Stock, Shares, Acquired				273
Treasury Stock, Value, Acquired, Cost Method				$ (4,212)
Shares Paid for Tax Withholding for Share Based Compensation				2
Adjustments Related to Tax Withholding for Share-based Compensation				$ (40)
Stock-based compensation (in shares)			45
Stock-based compensation			$ 609
Ending Balance (in shares) at Jun. 30, 2019	2,960	4,356	3,658
Ending Balance (in shares) at Jun. 30, 2019	698			698
Ending Balance at Jun. 30, 2019	$ 34,001		$ 485,740	$ (12,738)	(647)	(438,354)
Beginning Balance (in shares) at Mar. 31, 2019		4,305	3,622
Beginning Balance (in shares) at Mar. 31, 2019				683
Beginning Balance at Mar. 31, 2019	34,816		$ 485,315	$ (12,504)	(541)	(437,454)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	$ (900)					(900)
Other comprehensive loss					(106)
Treasury Stock, Shares, Acquired				15
Treasury Stock, Value, Acquired, Cost Method				$ (230)
Adjustments Related to Tax Withholding for Share-based Compensation				$ (4)
Stock-based compensation (in shares)			36
Stock-based compensation			$ 425
Ending Balance (in shares) at Jun. 30, 2019	2,960	4,356	3,658
Ending Balance (in shares) at Jun. 30, 2019	698			698
Ending Balance at Jun. 30, 2019	$ 34,001		$ 485,740	$ (12,738)	$ (647)	$ (438,354)