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Debt Instruments (Senior Notes Payable and Warrants) (Details) (USD $)
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1 Months Ended | 3 Months Ended | 6 Months Ended | 12 Months Ended | |||||
|---|---|---|---|---|---|---|---|---|---|
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May 31, 2012
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Oct. 31, 2011
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Apr. 30, 2011
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Jun. 30, 2014
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Jun. 30, 2013
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Jun. 30, 2014
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Jun. 30, 2013
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Dec. 31, 2013
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Dec. 31, 2011
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| Debt Instrument [Line Items] | |||||||||
| Interest expense | $ 3,777 | $ 673,731 | $ 430,380 | $ 1,312,844 | |||||
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Senior Notes Payable [Member]
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| Debt Instrument [Line Items] | |||||||||
| Issuance of notes payable | 3,500,000 | 500,000 | 1,000,000 | ||||||
| Principal amount | 5,000,000 | 1,500,000 | |||||||
| Term | 30 months | ||||||||
| Outstanding principal | 0 | 0 | 2,344,302 | ||||||
| Interest expense | $ 3,777 | $ 673,732 | $ 430,380 | $ 1,312,844 | |||||
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Senior Notes Payable [Member] | Series A [Member]
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| Debt Instrument [Line Items] | |||||||||
| Number of shares called by warrants | 128,570 | ||||||||