Income Taxes (Details Textual) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Income Taxes (Textual)
Net operating loss carryforwards	$ 38,655,000
Research and Development Tax Credit	560,000	816,000
Net operating loss carryforwards State income tax	15,128,000
Federal tax rate	2.87%
Deferred Tax Assets	15,012,000	16,802,000
Valuation allowance	15,012,000	16,802,000
Operating loss carryforward expiration description	Through 2027.
Decrease in valuation allowance	$ 1,791,000