Notes Payable to Former Stockholders - Additional Information (Detail) |
3 Months Ended |
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Mar. 31, 2018 | |
| Restricted Stock - Notes Payable [Member] | |
| Debt Instrument [Line Items] | |
| Unsecured notes interest rate | 5.00% |
| Unsecured notes maturity date | Jun. 30, 2020 |
| SARs - Notes Payable [Member] | |
| Debt Instrument [Line Items] | |
| Unsecured notes interest rate | 5.00% |
| Unsecured notes maturity date | Jun. 30, 2020 |
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- Definition Date when the notes payable to former stockholders is scheduled to be fully repaid. No definition available.
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition The interest rate applicable to the portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a set, unchanging rate. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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