Income Taxes (Details 2) (USD $)	Dec. 31, 2012	Dec. 31, 2011
Summary of income tax benefit
Gross tax assets	$ 38,826,000	$ 45,066,000
Valuation allowance	(38,826,000)	(45,066,000)
Net deferred tax assets
Net Operating Losses and Capitalized Research and Development Expenditures [Member]
Summary of income tax benefit
Gross tax assets	(430,481)	(1,949,000)
Valuation allowance	430,481	1,949,000
Net deferred tax assets
Net Operating Losses and Capitalized Research and Development Expenditures [Member] | Federal [Member]
Summary of income tax benefit
Gross tax assets	(348,366)	(2,737,000)
Net Operating Losses and Capitalized Research and Development Expenditures [Member] | State [Member]
Summary of income tax benefit
Gross tax assets	$ (82,115)	$ (645,000)