Significant Accounting Policies - Additional Information (Detail) - USD ($) shares in Millions	9 Months Ended		12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015		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	$ 298,000		$ 761,000	[1]
Premium deficiency reserves	1,800,000		800,000
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 (loss) income	0
Amount of dividends paid on or after Effective Date	0
Preferred stock dividends	13,500,000		17,748,000
Preferred stock dividends paid	13,500,000	$ 12,498,000
Redeemable Convertible Series B Preferred Stock [Member]
Significant Accounting Policies [Line Items]
Preferred stock dividends	13,500,000		17,000,000
Additional accrued preferred stock dividends	700,000		700,000
Preferred stock dividends paid	$ 13,500,000		$ 17,000,000
Preferred stock interest rate	3.00%		3.00%
2012 Plan [Member]
Significant Accounting Policies [Line Items]
Common stock reserved for future issuance					12.0	3.0	2.0

[1] Balances derived from audited financial statements as of December 31, 2015.