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Significant Accounting Policies - Additional Information (Detail) - USD ($) shares in Millions | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Feb. 25, 2015 | Feb. 10, 2014 | May. 22, 2012 | Mar. 19, 2012
Significant Accounting Policies [Line Items] |  |  |  |  |  |
Plan Effective Date | Mar. 19, 2012 |  |  |  |  |
Unearned premiums | $ 761,000 | $ 1,094,000 |  |  |  |
Premium deficiency reserves | 800,000 | 2,300,000 |  |  |  |
Maximum percent of the voting shares of the emerging entity immediately prior to the confirmation of reorganization |  |  |  |  |  | 50.00%
Company's reorganization value |  |  |  |  |  | $ 76,600,000
Comprehensive income (loss) | 0 |  |  |  |  |
Amount of dividends paid on or after Effective Date | 0 |  |  |  |  |
Preferred stock dividends | 17,748,000 |  |  |  |  |
Preferred stock dividends paid | 16,998,000 |  |  |  |  |
Redeemable Convertible Series B Preferred Stock [Member] |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |
Preferred stock dividends | 17,000,000 |  |  |  |  |
Additional accrued preferred stock dividends | 700,000 |  |  |  |  |
Preferred stock dividends paid | $ 17,000,000 |  |  |  |  |
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 |
Fixed Maturities [Member] |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |
Proceeds from sale of fixed-maturity securities |  | $ 12,600,000 |  |  |  |

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