CONSOLIDATED STATEMENTS OF INCOME (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Income Statement [Abstract]
Revenue	$ 7,995	$ 8,067	$ 14,985	$ 15,409
Costs, expenses and other income:
Cost of goods sold, exclusive of depreciation and amortization	5,850	5,873	11,288	11,570
Selling, general and administrative	1,343	1,335	2,919	2,634
Interest expense	10	11	19	21
Depreciation and amortization	171	155	340	308
Other income, net	(11)		(12)	(1)
Total expenses	7,363	7,374	14,554	14,532
Income before income tax provision	632	693	431	877
Income tax provision	185	189	129	196
Net income	$ 447	$ 504	$ 302	$ 681
Basic
Net income per share (in dollars per share)	$ 0.20	$ 0.22	$ 0.13	$ 0.30
Diluted
Net income per share (in dollars per share)	$ 0.20	$ 0.22	$ 0.13	$ 0.30