Major Customers (Details Textual) (USD $)	Dec. 31, 2012	Dec. 31, 2011
Customer One [Member]
Sales Revenue, Goods, Net, Percentage	26.30%	28.80%
Accounts Receivable, Gross	$ 2,021,000	$ 2,390,000
Customer Two [Member]
Sales Revenue, Goods, Net, Percentage	8.90%	12.20%
Accounts Receivable, Gross	627,000	746,000
Customer Three [Member]
Sales Revenue, Goods, Net, Percentage	7.50%	9.40%
Accounts Receivable, Gross	$ 0	$ 0