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v3.3.1.900

Long-Term Debt - Notes Payable to BMI - Additional Information (Detail) - USD ($) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Jan. 31, 2013
Debt Instrument [Line Items] |  |  |
Cash Collateral | $ 19,600,000 | $ 13,900,000 |
BMI | Bank note payable |  |  |
Debt Instrument [Line Items] |  |  |
Note payable, secured |  |  | $ 11,900,000
Cash Collateral |  |  | $ 750,000
Periodic principal payments | $ 100,000 |  |
Loans maturity period | Jan. 31, 2025 |  |
Frequency of debt instrument payment | Monthly |  |
Interest rate terms | The note bears interest at a variable rate equal to the prime rate with a floor of 3.25% and a ceiling of 9.0 |  |
Debt instrument, average interest rate during period | 3.25% |  |
Notes payable outstanding | $ 9,400,000 |  |
Debt instrument, Effective interest rate at period end | 3.50% |  |
Debt Issuance Cost | $ 100,000 |  |
BMI | Bank note payable | Maximum |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, average interest rate during period | 9.00% |  |
BMI | Bank note payable | Minimum |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, average interest rate during period | 3.25% |  |

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