CONSOLIDATED STATEMENTS OF INCOME (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Income Statement [Abstract]
Revenue	$ 8,067	$ 7,719	$ 15,409	$ 15,786
Costs, expenses and other income:
Cost of goods sold, exclusive of depreciation and amortization	5,873	5,286	11,570	11,545
Selling, general and administrative	1,335	1,220	2,634	2,478
Interest expense	11	12	21	23
Depreciation and amortization	155	149	308	296
Other income, net		(2)	(1)	(10)
Total expenses	7,374	6,665	14,532	14,332
Income from continuing operations before income tax provision	693	1,054	877	1,454
Income tax provision	189	309	196	428
Income from continuing operations	504	745	681	1,026
Discontinued Operations:
Loss from operations of a discontinued component, net of income tax benefit		(197)		(409)
Loss on disposal of QCC and AMP, net of income tax benefit		(268)		(268)
Loss from discontinued operations		(465)		(677)
Net income	$ 504	$ 280	$ 681	$ 349
Basic
Income per share from continuing operations (in dollars per share)	$ 0.22	$ 0.35	$ 0.30	$ 0.49
Loss per share from discontinued operations (in dollars per share)		$ (0.22)		$ (0.32)
Total net income per share (in dollars per share)	$ 0.22	$ 0.13	$ 0.30	$ 0.17
Diluted
Income per share from continuing operations (in dollars per share)	$ 0.22	$ 0.35	$ 0.30	$ 0.48
Loss per share from discontinued operations (in dollars per share)		$ (0.22)		$ (0.32)
Total net income per share (in dollars per share)	$ 0.22	$ 0.13	$ 0.30	$ 0.16