Consolidated Statements of Operations (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Income Statement [Abstract]
Net sales	$ 53,626	$ 48,460	$ 152,602	$ 140,482
Cost of products sold	44,983	46,022	129,489	128,090
Gross margin	8,643	2,438	23,113	12,392
Selling, general and administrative expenses	5,520	4,467	15,317	13,815
Operating income (loss)	3,123	(2,029)	7,796	(1,423)
Interest expense and other financing costs	(949)	(752)	(2,854)	(2,278)
Other (expense) income, net	(4)	418	(1)	481
Income (loss) before income taxes	2,170	(2,363)	4,941	(3,220)
Provision (benefit) for income taxes	775	(652)	2,596	(2,027)
Net income (loss)	$ 1,395	$ (1,711)	$ 2,345	$ (1,193)
Net income (loss) per common share - Basic	$ 0.20	$ (0.25)	$ 0.33	$ (0.17)
Net income (loss) per common share - Diluted	$ 0.20	$ (0.25)	$ 0.33	$ (0.17)
Weighted average shares of common stock outstanding
Basic	7,039,823	6,960,967	7,028,658	6,943,208
Diluted	7,539,291	6,960,967	7,114,121	6,943,208