Segment Information (Details 1) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Reconciliation of segment information
Net sales to external customers	$ 3,717,500	$ 3,996,800	$ 7,755,900	$ 7,865,200
(Loss) income before income taxes	(354,600)	51,000	(400,600)	176,800
Net (loss) income	(354,600)	51,000	(400,600)	176,800
Identifiable assets	6,567,400	6,908,100	6,567,400	6,908,100
Corporate assets	7,378,800	7,983,500	7,378,800	7,983,500
Total assets	$ 13,946,200	$ 14,891,600	$ 13,946,200	$ 14,891,600	$ 13,876,900