Income Taxes - Summary of Deferred Taxes (Detail) $ in Thousands	Sep. 30, 2016 USD ($)
Deferred tax assets:
Reserves for expected costs of liquidation	$ 11,462
Net operating and capital loss carryovers	116,045
Gross deferred tax assets	127,507
Less: Valuation allowance	(126,959)
Deferred tax asset, net of valuation allowance	548
Deferred tax liabilities:
Accrued investment income	(548)
Gross deferred tax liabilities	(548)
Net deferred taxes	$ 0