CONSOLIDATED STATEMENTS OF INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Income Statement [Abstract]
Revenue	$ 9,616	$ 10,296	$ 18,719	$ 19,243
Cost, expenses and other (income):
Cost of goods sold, exclusive of depreciation and amortization	7,628	7,129	14,670	13,845
Selling, general and administrative	1,611	1,521	3,443	3,157
Depreciation and amortization	218	205	428	412
Interest expense	15	17	38	36
Other income, net	(5)	(10)	(5)	(10)
Total expenses	9,467	8,862	18,574	17,440
Income before income tax provision	149	1,434	145	1,803
Income tax provision	44	430	14	541
Net income	$ 105	$ 1,004	$ 131	$ 1,262
Basic
Net Income per share (in dollars per share)	$ 0.05	$ 0.45	$ 0.06	$ 0.57
Diluted
Net income per share (in dollars per share)	$ 0.05	$ 0.43	$ 0.06	$ 0.55