Loans Payable (Details) (USD $)	0 Months Ended	9 Months Ended
	Jun. 14, 2013 item	Sep. 30, 2013
Notes payable
Debt issuance costs		$ 1,109,776
Loan Agreement
Notes payable
Aggregate principal amount	20,000,000
Number of installments over which the loan is to be repaid	30
Maturity date		Mar. 01, 2017
Interest rate under second condition (as a percent)		12.50%
Debt issuance costs	1,100,000
Fee paid to Hercules	200,000
Fee due and accrued		1,100,000
Effective interest rate of loan (as a percent)		14.50%
Maturities of debt
2014		2,308,145
2015		7,544,935
2016		8,555,035
2017		1,591,885
Total Principal Payable		20,000,000
Interest accrued on the loan payable		208,333
Loan Agreement | Forecast
Notes payable
Fee paid to Hercules		$ 1,100,000
Loan Agreement | Prime rate
Notes payable
Spread added to reference rate under first condition (as a percent)		12.50%
Variable rate basis under first condition		prime rate
Percentage point deducted from reference rate to compute variable rate under first condition		3.25%