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Subsequent Events (Details Textual) (USD $)	3 Months Ended	42 Months Ended	1 Months Ended	3 Months Ended	1 Months Ended
	Mar. 31, 2013	Nov. 30, 2012	Apr. 30, 2013 Subsequent Event [Member]	Mar. 31, 2013 Subsequent Event [Member]	Apr. 30, 2013 Silicon Valley Bank [Member] Subsequent Event [Member]
Subsequent events (Textual) [Abstract]
Number of shares of common stock				83,100
Sale of stock, price per share	$ 2.06			$ 1.87	$ 1.7034
Gross proceeds from common stock	$ 1,568,178	$ 26,700,000		$ 155,000
Sales agent is paid compensation up to 3% of gross proceeds	3.00%			3.00%
Initial term of lease				3 years
Net of loan fees approximately			9,900,000
Financial loan interest rate			6.00%
Repayment of principal and interest			$ 1,000,000
Principal and interest repayment period				30 months
Exercisable shares issuance period				10 years
Warrant exercise shares			293,531

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Class of warrant or right exercise of warrants or rights.

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Stock issued during period new issues selling price per share.

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Interest rate stated in the contractual debt agreement.

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