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Debt (Details Textual) (USD $)
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3 Months Ended | 12 Months Ended | 1 Months Ended | 0 Months Ended | 1 Months Ended | 0 Months Ended | 1 Months Ended | 0 Months Ended | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Mar. 31, 2015
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Mar. 31, 2014
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Dec. 31, 2014
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Dec. 31, 2013
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Dec. 21, 2012
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Apr. 15, 2014
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Feb. 28, 2014
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Jul. 20, 2013
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Jul. 29, 2013
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Feb. 13, 2015
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Dec. 19, 2014
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Jul. 17, 2014
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Jun. 06, 2014
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| Short-term Debt [Line Items] | |||||||||||||
| Warrants and Rights Outstanding | $ 0 | $ 303,102 | $ 0 | ||||||||||
| Long-term Debt, Gross | 3,376,573 | 2,027,240 | |||||||||||
| Class of Warrant or Right, Number of Securities Called by Warrants or Rights | 21,964 | ||||||||||||
| Fair Value Adjustment of Warrants | 223,172 | 0 | 1,095,282 | 0 | |||||||||
| Debt Instrument, Unamortized Discount | 244,000 | ||||||||||||
| 2012 Notes Member | |||||||||||||
| Short-term Debt [Line Items] | |||||||||||||
| Debt Instrument, Face Amount | 586,000 | 525,000 | |||||||||||
| Debt Instrument, Interest Rate, Stated Percentage | 8.00% | ||||||||||||
| Amortization of Debt Discount (Premium) | 533,000 | 533,000 | 533,000 | ||||||||||
| Debt Instrument, Interest Rate, Effective Percentage | 88.00% | ||||||||||||
| Debt Instrument, Maturity Amount | 1,058,270 | ||||||||||||
| Debt Instrument, Maturity Date | Dec. 10, 2013 | ||||||||||||
| Gains (Losses) on Restructuring of Debt | 200,000 | ||||||||||||
| Warrants and Rights Outstanding | 260,000 | ||||||||||||
| Long-term Debt, Gross | 660,000 | ||||||||||||
| 2013 Notes Member | |||||||||||||
| Short-term Debt [Line Items] | |||||||||||||
| Debt Instrument, Face Amount | 1,500,000 | ||||||||||||
| Debt Instrument, Interest Rate, Stated Percentage | 8.00% | ||||||||||||
| Debt Instrument, Maturity Date | Jul. 29, 2014 | ||||||||||||
| Debt Instrument, Payment Terms | In the event that the Company issued equity securities resulting in gross proceeds to the Company of at least $3 million prior to maturity, the Company was to pay the note holders the repayment principal and all accrued and unpaid interest, at such time. In the event that the Company consummated a sale of the Company, as defined, the Company was to, while the 2012 Notes remain outstanding and at the election of the holders of two-thirds of the aggregate principal outstanding either (i) pay the holders the repayment principal amount plus accrued interest or (ii) immediately prior to the closing, convert all outstanding principal and interest into the Companys Series D convertible preferred stock at 87.5% of the Series D convertible preferred stock conversion price. | ||||||||||||
| Proceeds from Notes Payable | 16,667 | 446,151 | 968,970 | ||||||||||
| Gains (Losses) on Restructuring of Debt | 668,000 | ||||||||||||
| Warrants and Rights Outstanding | 668,000 | ||||||||||||
| Long-term Debt, Gross | 1,500,000 | ||||||||||||
| 2014 Notes Member | |||||||||||||
| Short-term Debt [Line Items] | |||||||||||||
| Debt Instrument, Face Amount | 2,000,000 | ||||||||||||
| Debt Instrument, Interest Rate, Stated Percentage | 12.00% | ||||||||||||
| Amortization of Debt Discount (Premium) | 34,000 | 219,000 | |||||||||||
| Debt Instrument, Maturity Date | Jun. 06, 2015 | ||||||||||||
| Debt Instrument, Payment Terms | In the event that the Company issues equity securities, resulting in gross proceeds to the Company of at least $5 million prior to maturity, all outstanding principal and accrued and unpaid interest under the 2014 Notes will automatically convert into the newly issued equity securities at 70% of the offering price, as applicable, in connection with the closing of the first sale of the equity securities of the Company. In the event that the Company consummates a sale of the Company, as defined, the Company shall, while the 2014 Notes remain outstanding and at the election of the holders of two-thirds of the aggregate principal outstanding shall immediately prior to the closing, convert all outstanding principal and interest into the Company’s Series D convertible preferred stock (or other Subsequent Qualified Financing Instruments) at 70.0% of the Series D convertible preferred stock original issuance price. | ||||||||||||
| Proceeds from Notes Payable | 1,283,000 | 288,000 | 495,000 | ||||||||||
| Warrants and Rights Outstanding | 34,000 | 1,364,000 | 1,364,000 | ||||||||||
| Long-term Debt, Gross | 1,039,000 | ||||||||||||
| Fair Value Assumptions, Expected Term, Simplified Method | 0.25 years for an IPO scenario; 4.5 years for an M&A or liquidation scenario | Term - 0.5 years for an IPO scenario; 5 years for an M&A or liquidation scenario | |||||||||||
| Fair Value Assumptions, Expected Volatility Rate | 55.00% | 70.00% | |||||||||||
| Fair Value Assumptions, Expected Dividend Rate | 0.00% | 0.00% | |||||||||||
| Class of Warrant or Right, Number of Securities Called by Warrants or Rights | 2,100,000 | ||||||||||||
| Class of Warrant or Right, Exercise Price of Warrants or Rights | $ 1.22 | ||||||||||||
| Fair Value Adjustment of Warrants | 223,000 | 1,096,000 | |||||||||||
| Adjustments to Additional Paid in Capital, Warrant Issued | 303,000 | 80,000 | |||||||||||
| 2014 Notes Member | Minimum [Member] | |||||||||||||
| Short-term Debt [Line Items] | |||||||||||||
| Fair Value Inputs, Discount Rate | 0.60% | 0.60% | |||||||||||
| 2014 Notes Member | Maximum [Member] | |||||||||||||
| Short-term Debt [Line Items] | |||||||||||||
| Fair Value Inputs, Discount Rate | 1.74% | 1.60% | |||||||||||
| Note and Warrant Purchase Agreement [Member] | |||||||||||||
| Short-term Debt [Line Items] | |||||||||||||
| Debt Instrument, Face Amount | 2,100,000 | ||||||||||||
| Proceeds from Notes Payable | $ 288,000 | ||||||||||||