CONSOLIDATED STATEMENTS OF INCOME (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Income Statement [Abstract]
Revenue	$ 8,369	$ 8,275
Costs, expenses and other income:
Cost of goods sold, exclusive of depreciation and amortization	6,773	6,209
Selling, general and administrative	1,332	1,297
Interest expense	13	15
Depreciation and amortization	171	167
Other income, net	(8)	(10)
Costs, expenses and other income, Total	8,281	7,678
Income before income tax provision	88	597
Income tax provision	25	179
Net income	$ 63	$ 418
Basic
Net income per share (in dollars per share)	$ 0.03	$ 0.21
Diluted
Net income per share (in dollars per share)	$ 0.03	$ 0.19