v3.7.0.1

Related Party Transactions - Additional Information (Detail) - USD ($) |  | 12 Months Ended
--- | --- | ---
Jan. 15, 2015 | Dec. 31, 2016 | Dec. 31, 2014
Related Party Transaction [Line Items] |  |  |
Ownership Percentage of the outstanding common stock |  | 100.00% |
American Security [Member] |  |  |
Related Party Transaction [Line Items] |  |  |
Management Fees and Expenses |  |  | $ 14,700,000
Amounts due management fees and expenses |  | $ 0 |
Ownership Percentage of the outstanding common stock | 78.50% |  |
Affiliates Of American Security [Member] |  |  |
Related Party Transaction [Line Items] |  |  |
Ownership Percentage of the outstanding common stock |  | 76.00% |

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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. + References No definition available. + Details
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- Definition Fees paid to advisors who provide certain management support and administrative oversight services including the organization and sale of stock, investment funds, limited partnerships and mutual funds. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.3) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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