CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $) In Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Treasury Stock [Member]
Balance at Dec. 31, 2010	$ 39,438	$ 262	$ 20,523	$ 20,412	$ 1,202	$ (2,961)
Balance (in shares) at Dec. 31, 2010		25,155
Net income (loss)	4,471	0	0	4,471	0	0
Stock-based compensation	815	0	815	0	0	0
Stock-based compensation (in shares)		30
Pension liability adjustment, net of taxes	(284)	0	0	0	(284)	0
Change in fair value of derivatives, net of taxes	(1,945)	0	0	0	(1,945)	0
Purchase of treasury stock	(1,327)					(1,327)
Purchase of treasury stock (in shares)		(494)
Balance at Dec. 31, 2011	41,168	262	21,338	24,883	(1,027)	(4,288)
Balance (in shares) at Dec. 31, 2011		24,691
Net income (loss)	7,473	0	0	7,473	0	0
Stock-based compensation	977	0	977	0	0	0
Stock-based compensation (in shares)		0
Issuance of common stock upon exercise of stock options	574	2	572	0	0	0
Issuance of common stock upon exercise of stock options (in shares)		202
Restricted shares withheld for taxes	0	0	0	0	0	0
Restricted shares withheld for taxes (in shares)		(4)
Acquisition of non-controlling interest	(747)	0	(747)	0	0	0
Pension liability adjustment, net of taxes	(138)	0	0	0	(138)	0
Change in fair value of derivatives, net of taxes	1,202	0	0	0	1,202	0
Balance at Dec. 31, 2012	50,509	264	22,140	32,356	37	(4,288)
Balance (in shares) at Dec. 31, 2012		24,889
Net income (loss)	(10,632)	0	0	(10,632)	0	0
Stock-based compensation	935	0	935	0	0	0
Stock-based compensation (in shares)		0
Issuance of common stock upon exercise of stock options	72	2	70	0	0	0
Issuance of common stock upon exercise of stock options (in shares)		164
Restricted shares withheld for taxes	(31)	0	(31)	0	0	0
Restricted shares withheld for taxes (in shares)		(3)
Acquisition of non-controlling interest	(151)	0	(151)	0	0	0
Pension liability adjustment, net of taxes	(73)	0	0	0	(73)	0
Change in fair value of derivatives, net of taxes	(656)	0	0	0	(656)	0
Balance at Dec. 31, 2013	$ 39,973	$ 266	$ 22,963	$ 21,724	$ (692)	$ (4,288)
Balance (in shares) at Dec. 31, 2013		25,050