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Long-term Debt (Details 1) (USD $)
12 Months Ended
Dec. 31, 2012
Share price $ 7.29
Risk-free interest rate 2.00%
Dividend yield 0.00%
Expected volatility 56.26%
Expected term 6 years
Warrant [Member]
 
Share price $ 3.03
Risk-free interest rate 0.77%
Dividend yield 0.00%
Expected volatility 53.75%
Expected term 5 years 2 months 12 days