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Long-Term Debt - Additional Information (Details) (USD $)
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3 Months Ended |
1 Months Ended |
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Mar. 31, 2015
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Jun. 30, 2014
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Mar. 31, 2014
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Dec. 31, 2011
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Sep. 30, 2013
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May 31, 2013
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| First Hercules Warrant |
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| Debt Instrument [Line Items] |
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| Exercisable, share of common stock |
39,038 |
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| Warrants issued, per share |
$ 10.25 |
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| Exercise price of warrant |
$ 6.11 |
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| Second Hercules Warrant |
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| Debt Instrument [Line Items] |
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| Exercisable, share of common stock |
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99,759 |
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| Exercise price of warrant |
$ 6.11 |
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| Devisable amount of common stock equal to quotient |
$ 609,533 |
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| Warrant expire date |
May 31, 2023 |
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| December 2011 Note |
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| Debt Instrument [Line Items] |
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| Loan and security agreement |
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20,000,000 |
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15,000,000 |
| Long-term debt, borrowed |
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10,000,000 |
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5,200,000 |
| Percentage of convertible notes |
9.55% |
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9.55% |
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| Percentage of Long-term debt, interest of borrowing |
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3.25% |
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| Long-term debt, interest of borrowing |
interest at the greater of (i) 9.55%, or (ii) the sum of 9.55% plus the prime lending rate, as published by the Wall Street Journal, minus 3.25% per annum. |
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| Additional borrowing |
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3,000,000 |
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10,000,000 |
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| Extended date of additional borrowing |
Sep. 30, 2013 |
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Dec. 26, 2014 |
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| Amortization period of principal and interest payments |
35 months |
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| Long term debt maturity date |
Apr. 01, 2018 |
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| Long term debt maturity start date |
Jun. 01, 2015 |
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| December 2011 Note | Credit Facility Mature December First Two Thousand Fifteen |
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| Debt Instrument [Line Items] |
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| Debt instrument, term fee |
400,000 |
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| Line of credit facility fees payment date description |
earliest to occur of (i) December 1, 2015, (ii) the date that the Company prepays all of the outstanding advances and accrued interest, or (iii) the date that all of the advances and interest become due and payable |
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| Line of credit facility fees repayment date |
Dec. 01, 2015 |
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| December 2011 Note | Credit Facility Mature April First Two Thousand Eighteen |
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| Debt Instrument [Line Items] |
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| Debt instrument, term fee |
100,000 |
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| Line of credit facility fees payment date description |
earliest to occur of (i) April 1, 2018, (ii) the date that the Company prepays all of the outstanding advances and accrued interest, or (iii) the acceleration of the date that all of the advances and interest become due and payable |
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| Line of credit facility fees repayment date |
Apr. 01, 2018 |
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| Line of credit facility, fees |
100,000 |
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| December 2011 Note | Credit Facility Mature June First Two Thousand Seventeen |
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| Debt Instrument [Line Items] |
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| Debt instrument, term fee |
500,000 |
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| Line of credit facility fees payment date description |
earliest to occur of (i) June 1, 2017, (ii) the date that the Company prepays all of the outstanding advances and accrued interest, or (iii) the date that all of the advances and interest become due and payable |
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| Line of credit facility fees repayment date |
Jun. 01, 2017 |
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| Minimum | December 2011 Note |
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| Debt Instrument [Line Items] |
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| Additional borrowing |
3,000,000 |
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| Maximum | December 2011 Note |
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| Debt Instrument [Line Items] |
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| Additional borrowing |
$ 10,000,000 |
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