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Income Taxes - Significant Portions of Deferred Tax Liabilities and Deferred Tax Assets (Detail) - Successor [Member] - USD ($) $ in Thousands | Mar. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Deferred tax liabilities: |  |
Insurance intangible | $ 325,906 | $ 336,728
Variable interest entities | 46,022 | 46,343
Investments | 52,647 | 38,656
Unearned premiums and credit fees | 66,739 | 68,682
Undistributed Earnings of Foreign Subsidiaries | 57,565 | 30,699
Other | 4,413 | 4,276
Deferred Tax Liabilities, Gross, Noncurrent | 553,292 | 525,384
Deferred tax assets: |  |
Net operating loss and capital carryforward | 1,420,188 | 1,409,565
Loss reserves | 271,552 | 224,553
AMT Credits | 31,533 | 31,532
Other | 16,267 | 16,726
Sub total deferred tax assets | 1,739,540 | 1,682,376
Valuation allowance | 1,187,994 | 1,158,712
Total deferred tax assets | 551,546 | 523,664
Deferred Tax Liabilities, Net | $ 1,746 | $ 1,720

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