|
Long-Term Debt - Additional Information (Detail) (USD $)
|
1 Months Ended |
3 Months Ended |
|
Jan. 31, 2015
|
Feb. 28, 2014
|
Mar. 31, 2015
|
| Debt Instrument [Line Items] |
|
|
|
| Interest rate of credit facility |
8.35% |
|
|
| Prime rate |
3.25% |
|
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| Term Loan maturity date |
Jul. 02, 2018 |
|
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| Repayment date of new term loan |
Jan. 01, 2016 |
|
|
| Share purchase of common stock |
81,227 |
|
|
| Exercise price of shares |
$ 5.54 |
|
|
| Dividend yield of warrants |
|
0.00% |
0.00% |
| Expected volatility of warrants |
|
88.00% |
89.00% |
| Expected life of warrants |
|
5 years |
4 years 10 months 6 days |
| Risk-free interest rate of warrants |
|
1.48% |
1.34% |
| Warrants [Member] |
|
|
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| Debt Instrument [Line Items] |
|
|
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| Dividend yield of warrants |
0.00% |
|
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| Fair value of warrants issued |
$ 400,000 |
|
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| Charge recorded as debt discount and will be amortized |
200,000 |
|
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| Expected volatility of warrants |
73.00% |
|
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| Expected life of warrants |
5 years |
|
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| Risk-free interest rate of warrants |
1.30% |
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| Hercules Loan [Member] |
|
|
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| Debt Instrument [Line Items] |
|
|
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| Facility Charges |
200,000 |
|
|
| End of term charges |
800,000 |
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| Term Loan [Member] |
|
|
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| Debt Instrument [Line Items] |
|
|
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| Term loan |
15,000,000 |
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| Repayment of existing term loan |
$ 3,100,000 |
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| Minimum [Member] |
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| Debt Instrument [Line Items] |
|
|
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| Interest rate of credit facility |
8.35% |
|
|