Consolidated Statements of Income (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Net sales:
Sales Revenue, Goods, Net	$ 33,816,000	$ 44,243,000	$ 113,159,000	$ 145,612,000
Contracts Revenue	7,520,000	3,806,000	12,651,000	6,893,000
Total net sales	41,336,000	48,049,000	125,810,000	152,505,000
Total cost of sales	35,755,000	39,738,000	105,043,000	124,186,000
Gross margin	5,581,000	8,311,000	20,767,000	28,319,000
Total selling, general and administrative expense	3,924,000	4,409,000	12,361,000	13,294,000
Income before interest and taxes	1,657,000	3,902,000	8,406,000	15,025,000
Interest expense	67,000	95,000	233,000	237,000
Income before income taxes	1,590,000	3,807,000	8,173,000	14,788,000
Income tax expense	561,000	1,323,000	2,794,000	5,069,000
Net income	$ 1,029,000	$ 2,484,000	$ 5,379,000	$ 9,719,000
Net income per common share:
Basic (USD per share)	$ 0.13	$ 0.33	$ 0.71	$ 1.28
Diluted (USD per share)	$ 0.13	$ 0.33	$ 0.70	$ 1.27
Weighted average shares outstanding:
Basic	7,635,000	7,597,000	7,616,000	7,578,000
Diluted	7,667,000	7,625,000	7,649,000	7,623,000