Fresh Start Financial Statement Reporting - Schedule of Impact of Fresh Start Adjustments (Parenthetical) (Detail)	1 Months Ended
	Apr. 30, 2013
Loans (Non-VIE) [Member]
Fresh-Start Adjustment [Line Items]
Principal-weighted average life	6 years 9 months 22 days
Coupon rate	5.01%
Discount rate	9.71%
VIE Loans and Long-Term Debt [Member]
Fresh-Start Adjustment [Line Items]
Discount rate	5.70%
Obligations Under Investment Agreements [Member]
Fresh-Start Adjustment [Line Items]
Discount rate	9.40%
Surplus Notes [Member]
Fresh-Start Adjustment [Line Items]
Discount rate	10.60%
Junior Surplus Notes [Member]
Fresh-Start Adjustment [Line Items]
Discount rate	16.60%