Consolidated Statements of Income (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Net sales:
Sales Revenue, Goods, Net	$ 37,593,000	$ 33,816,000	$ 110,723,000	$ 113,159,000
Contracts Revenue	901,000	7,520,000	11,885,000	12,651,000
Total net sales	38,494,000	41,336,000	122,608,000	125,810,000
Total cost of sales	32,730,000	35,755,000	103,001,000	105,043,000
Gross margin	5,764,000	5,581,000	19,607,000	20,767,000
Total selling, general and administrative expense	4,358,000	3,924,000	12,450,000	12,361,000
Income before interest and taxes	1,406,000	1,657,000	7,157,000	8,406,000
Interest expense	62,000	67,000	191,000	233,000
Income before income taxes	1,344,000	1,590,000	6,966,000	8,173,000
Income tax expense	489,000	561,000	2,262,000	2,794,000
Net income	$ 855,000	$ 1,029,000	$ 4,704,000	$ 5,379,000
Net income per common share:
Basic (USD per share)	$ 0.11	$ 0.13	$ 0.61	$ 0.71
Diluted (USD per share)	$ 0.11	$ 0.13	$ 0.61	$ 0.70
Weighted average shares outstanding:
Basic	7,711,000	7,635,000	7,683,000	7,616,000
Diluted	7,757,000	7,667,000	7,739,000	7,649,000