Income Taxes - Significant Portions of Deferred Tax Liabilities and Deferred Tax Assets (Detail) - Successor [Member] - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Deferred tax liabilities:
Insurance intangible	$ 336,728	$ 424,239
Variable interest entities	46,343	10,053
Investments	38,656	66,278
Unearned premiums and credit fees	68,682	98,945
Undistributed Earnings of Foreign Subsidiaries	30,699	0
Other	4,276	34,025
Deferred Tax Liabilities, Gross, Noncurrent	525,384	633,540
Total deferred tax liabilities	(1,720)	(2,205)
Deferred tax assets:
Net operating loss and capital carryforward	1,409,565	1,504,569
Loss reserves	224,553	122,635
AMT Credits	31,532	27,252
Other	16,726	12,752
Sub total deferred tax assets	1,682,376	1,667,208
Valuation allowance	1,158,712	1,035,873
Total deferred tax assets	$ 523,664	$ 631,335