Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Income Statement [Abstract]
Sales, net	$ 16,664	$ 6,589	$ 28,733	$ 15,166
Expenses
Cost of products	11,073	4,204	19,313	9,097
Selling, general and administrative	3,497	2,278	6,560	5,221
Total expenses	14,570	6,482	25,873	14,318
Operating income	2,094	107	2,860	848
Other income:
Interest income	1	0	2	0
Other income	7	39	8	41
Total other income	8	39	10	41
Income before income taxes	2,102	146	2,870	889
Income tax expense	(737)	(68)	(992)	(272)
Net income	$ 1,365	$ 78	$ 1,878	$ 617
Net earnings per share-basic:	$ 0.10	$ 0.01	$ 0.14	$ 0.05
Net earnings per share-diluted:	$ 0.10	$ 0.01	$ 0.14	$ 0.04
Weighted average shares outstanding-basic	13,734,286	13,707,716	13,732,424	13,689,676
Weighted average shares outstanding-diluted	13,841,208	13,921,241	13,819,700	13,889,324