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