Consolidated Statements of Income (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Net sales:
Sales Revenue, Goods, Net	$ 36,336,000	$ 42,530,000
Contracts Revenue	410,000	2,938,000
Total net sales	36,746,000	45,468,000
Total cost of sales	30,255,000	36,605,000
Gross margin	6,491,000	8,863,000
Total selling, general and administrative expense	3,925,000	4,421,000
Income before interest and taxes	2,566,000	4,442,000
Interest expense	64,000	92,000
Income before income taxes	2,502,000	4,350,000
Income tax expense	814,000	1,460,000
Net income	$ 1,688,000	$ 2,890,000
Net income per common share:
Basic (USD per share)	$ 0.22	$ 0.38
Diluted (USD per share)	$ 0.22	$ 0.38
Weighted average shares outstanding:
Basic	7,652,000	7,597,000
Diluted	7,708,000	7,607,000