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Significant Accounting Policies - Additional Information (Detail) - USD ($) shares in Millions | 9 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Sep. 30, 2015 | Feb. 25, 2015 | Dec. 31, 2014 | Feb. 10, 2014 | May. 22, 2012 | Mar. 19, 2012
Significant Accounting Policies [Line Items] |  |  |  |  |  |
Plan Effective Date | Mar. 19, 2012 |  |  |  |  |
Unearned premiums | $ 836,000 |  | $ 1,094,000 |  |  |
Premium deficiency reserves | 2,100,000 |  | $ 2,300,000 |  |  |
Company's reorganization value |  |  |  |  |  | $ 76,600,000
Comprehensive (loss) income | 0 |  |  |  |  |
Amount of dividends paid on or after Effective Date | 0 |  |  |  |  |
Preferred stock dividends | 13,248,000 |  |  |  |  |
Preferred stock dividends paid | 12,498,000 |  |  |  |  |
Redeemable Convertible Preferred Stock [Member] |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |
Preferred stock dividends | 12,500,000 |  |  |  |  |
Additional accrued preferred stock dividends | 700,000 |  |  |  |  |
Preferred stock dividends paid | $ 12,500,000 |  |  |  |  |
Preferred stock dividend rate | 3.00% |  |  |  |  |
2012 Plan [Member] |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |
Common stock reserved for future issuance |  | 12.0 |  | 3.0 | 2.0 |

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- Definition Aggregate number of common shares reserved for future issuance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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