Income Tax Provision - Summary of Deferred Taxes (Detail) $ in Thousands	Sep. 30, 2015 USD ($)
Deferred tax assets:
Reserves for expected costs of liquidation	$ 11,534
Net operating and capital loss carryovers	109,051
Gross deferred tax assets	120,585
Less: Valuation allowance	(120,021)
Deferred tax asset, net of valuation allowance	564
Deferred tax liabilities:
Accrued investment income	(564)
Gross deferred tax liabilities	(564)
Net deferred taxes	$ 0