CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) [Abstract]
Net sales	$ 26,374	$ 25,519	$ 76,756	$ 71,696
Operating costs and expenses:
Cost of sales	18,777	18,936	56,210	53,924
Selling, general and administrative expenses	4,089	3,812	12,348	11,585
Non-recurring costs	54	96	2,773	190
Depreciation and amortization	2,593	3,050	8,094	8,579
Loss on disposal and impairment of property and equipment	58	61	1,081	137
Total operating costs and expenses	25,571	25,955	80,506	74,415
Income (loss) from operations	803	(436)	(3,750)	(2,719)
Interest expense	537	1,138	5,790	3,359
Income (loss) from continuing operations	266	(1,574)	(9,540)	(6,078)
Loss from discontinued operations	(49)	(511)	(401)	(872)
Net income (loss)	$ 217	$ (2,085)	$ (9,941)	$ (6,950)
Basic earnings (loss) per share:
Income (loss) from continuing operations (in dollars per share)	$ 0.01	$ (0.07)	$ (0.39)	$ (0.25)
Loss from discontinued operations (in dollars per share)	$ 0	$ (0.02)	$ (0.02)	$ (0.04)
Basic earnings (loss) (in dollars per share)	$ 0.01	$ (0.09)	$ (0.41)	$ (0.29)
Diluted earnings (loss) per share:
Income (loss) from continuing operations (in dollars per share)	$ 0.01	$ (0.07)	$ (0.39)	$ (0.25)
Loss from discontinued operations (in dollars per share)	$ 0	$ (0.02)	$ (0.02)	$ (0.04)
Diluted earnings (loss) (in dollars per share)	$ 0.01	$ (0.09)	$ (0.41)	$ (0.29)
Weighted average shares used in computing earnings (loss) per share
Basic (in shares)	24,457	24,019	24,257	23,901
Diluted (in shares)	25,809	24,019	24,257	23,901