Financial Guarantee Insurance Contracts - Effect of Reinsurance on Premiums Written and Earned (Detail) - Successor [Member] - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Reinsurance Premiums for Insurance Companies, by Product Segment [Line Items]
Direct Premiums Written	$ (10,543)	$ (8,710)	$ (39,364)	$ (18,840)
Assumed Reinsurance Premiums Written	0	0	0	0
Ceded Reinsurance Premiums Written	(1,526)	(105)	(8,425)	(882)
Premiums written, net of reinsurance	9,017	8,605	30,939	17,958
Direct Premiums Earned	59,096	77,982	161,058	214,787
Assumed Reinsurance Premiums Earned	21	22	64	66
Ceded Reinsurance Premiums Earned	5,899	6,469	13,702	16,721
Reinsurance on premiums earned, Net	$ 53,218	$ 71,535	$ 147,420	$ 198,132