CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Income Statement [Abstract]
Revenue	$ 34,181	$ 31,659
Costs, expenses and other income:
Cost of goods sold, exclusive of depreciation and amortization	25,278	22,900
Selling, general and administrative	5,019	5,001
Interest expense	65	74
Depreciation and amortization	686	664
Other income, net	(162)	(28)
Costs, expenses and other income	30,886	28,611
Income before income tax provision	3,295	3,048
Income tax provision	669	920
Net income	$ 2,626	$ 2,128
Basic
Net income per share (in dollars per share)	$ 1.31	$ 1.08
Diluted
Net income per share (in dollars per share)	$ 1.24	$ 1.01