Segment Information (Details 1) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012
Reconciliation of segment information
Net sales	$ 4,502,100	$ 3,717,500	$ 9,233,800	$ 7,755,900
Income (loss) before income taxes	132,200	(354,600)	72,700	(400,600)
Consolidated income (loss) before income taxes	132,200	(354,600)	72,700	(400,600)
Total assets	7,771,400	13,946,200	7,771,400	13,946,200	12,795,800
Identifiable
Reconciliation of segment information
Total assets	6,626,000	6,567,400	6,626,000	6,567,400
Corporate
Reconciliation of segment information
Total assets	$ 1,145,500	$ 7,378,800	$ 1,145,500	$ 7,378,800