Stock Purchase Warrants (Details Textual) (USD $)	9 Months Ended	1 Months Ended			3 Months Ended		9 Months Ended
	Sep. 30, 2013	Oct. 25, 2012 Warrant [Member]	Mar. 15, 2012 Warrant [Member]	Dec. 20, 2011 Warrant [Member]	Sep. 30, 2013 Warrant [Member] General and Administrative Expenses and Research and Development Expense [Member]	Sep. 30, 2012 Warrant [Member] General and Administrative Expenses and Research and Development Expense [Member]	Sep. 30, 2013 Warrant [Member] General and Administrative Expenses and Research and Development Expense [Member]	Sep. 30, 2012 Warrant [Member] General and Administrative Expenses and Research and Development Expense [Member]
Issuance of Warrants to Purchase of Common Stock		635,855
Warrants Exercise Price Per Share		$ 1.60
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Outstanding, Weighted Average Remaining Contractual Terms	3 years 11 days	5 years
Investment Warrants Expiration Date		Oct. 25, 2017
Share-based Compensation Arrangement by Share-based Payment Award, Warrants, Exercisable Number			250,000	100,000
Share-based Compensation Arrangement by Share-based Payment Award, Warrants, Vested and Expected to Vest Outstanding, Number			50,000
Incremental Expense			$ 76,000
Share-based Compensation Arrangement by Share-based Payment Award, Warrants, Exercisable in Period			2 years	5 years
Warrants Exercisable Price Per Share			$ 2.20	$ 1.14
Allocated Share-based Compensation Expense					$ 0	$ 1,000	$ 22,000	$ 271,000