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v3.3.1.900

Long-Term Debt - Additional Information (Detail) |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | ---
Dec. 23, 2014 USD ($) | Sep. 30, 2015 USD ($) | Dec. 31, 2014 USD ($) TRANCHES | Dec. 31, 2015 USD ($)
Debt Instrument [Line Items] |  |  |  |
Loss on extinguishment of debt |  |  |  | $ 1,671,000
Loan and Security Agreement | Hercules Technology Growth Capital, Inc. (“Hercules”) |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Maximum borrowing capacity |  |  | $ 40,000,000 |
Number of tranches for loan and security agreement | TRANCHES |  |  | 2 |
Facility charge to Hercules |  |  | $ 400,000 |
Repayment of loan agreement |  | $ 11,000,000 |  |
Outstanding principal |  | 10,000,000 |  |
Accrued unpaid interest |  | 38,000 |  |
Term fee |  | 800,000 |  |
Prepayment charges |  | 200,000 |  |
Loss on extinguishment of debt |  | 1,700,000 |  |
Debt instrument, interest rate minimum |  |  |  | 9.75%
Debt instrument, interest rate terms |  |  |  | The interest rate in the Loan Agreement was calculated at a rate equal to the greater of either: (i) 9.75% plus the prime rate as reported from time to time in The Wall Street Journal minus 5.25%, and (ii) 9.75%.
Debt instrument, payment terms |  |  |  | Monthly payments made under the Loan Agreement between December 2014 and the date of repayment were interest only.
Loan and Security Agreement | Hercules Technology Growth Capital, Inc. (“Hercules”) | Prime Rate |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, interest rate |  |  |  | 9.75%
Debt instrument, reduction in basis spread on variable rate |  |  |  | 5.25%
Loan and Security Agreement | Hercules Technology Growth Capital, Inc. (“Hercules”) | First Tranche |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Proceeds from lines of credit | $ 10,000,000 |  |  |
Loan and Security Agreement | Hercules Technology Growth Capital, Inc. (“Hercules”) | Second Tranche |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Proceeds from lines of credit |  |  |  | $ 0
Available borrowing capacity |  | $ 30,000,000 |  |

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