CONSOLIDATED STATEMENTS OF INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Income Statement [Abstract]
Revenue	$ 9,242	$ 7,995	$ 17,413	$ 14,985
Cost, expenses and other income:
Cost of goods sold, exclusive of depreciation and amortization	6,926	5,850	13,402	11,288
Selling, general and administrative	1,312	1,343	3,077	2,919
Interest expense	14	10	35	19
Arbitration award expense			50
Depreciation and amortization	177	171	340	340
Insurance proceeds - arbitration			(4,500)
Other income, net	(128)	(11)	(130)	(12)
Total expenses	8,301	7,363	12,274	14,554
Income before income tax provision	941	632	5,139	431
Income tax provision	320	185	1,747	129
Net income	$ 621	$ 447	$ 3,392	$ 302
Basic
Net income per share (in dollars per share)	$ 0.28	$ 0.21	$ 1.56	$ 0.14
Diluted
Net income per share (in dollars per share)	$ 0.27	$ 0.21	$ 1.50	$ 0.14