CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Net sales	$ 250,990	$ 252,596	$ 189,423
Cost of products sold	209,841	205,148	155,651
Selling and administrative expenses	17,746	17,761	13,349
Operating income	23,403	29,687	20,423
Interest expense and other financing costs	(2,592)	(1,421)	(452)
Other income, net	140	212	92
Income before income tax expense	20,951	28,478	20,063
Provision for income taxes	6,334	10,356	6,821
Net income	$ 14,617	$ 18,122	$ 13,242
Net income per common share - Basic	$ 2.13	$ 2.65	$ 1.95
Net income per common share - Diluted	$ 2.02	$ 2.56	$ 1.93
Weighted average shares of Common Stock outstanding:
Basic	6,874,669	6,826,490	6,782,576
Diluted	7,454,030	7,138,824	6,868,255