Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Income Statement [Abstract]
Net sales	$ 50,887	$ 39,651	$ 152,369	$ 120,275
Cost of products sold	45,423	34,917	135,494	109,861
Gross margin	5,464	4,734	16,875	10,414
Selling, general and administrative expenses	4,448	4,504	13,676	12,933
Operating income (loss)	1,016	230	3,199	(2,519)
Interest expense and other financing costs	1,122	924	3,209	3,682
Other (income) expense	(23)	118	(43)	210
(Loss) income before income taxes	(83)	(812)	33	(6,411)
Provision (benefit) for income taxes	176	(292)	283	(2,649)
Net loss	$ (259)	$ (520)	$ (250)	$ (3,762)
Net loss per common share -Basic	$ (0.04)	$ (0.07)	$ (0.03)	$ (0.52)
Net loss per common share -Diluted	$ (0.04)	$ (0.07)	$ (0.03)	$ (0.52)
Weighted average shares of common stock outstanding
Basic	7,228,277	7,206,659	7,221,426	7,188,782
Diluted	7,228,277	7,206,659	7,221,426	7,188,782