Net Assets in Liquidation - Schedule of Cash and Cash Equivalent and Marketable Securities (Detail) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 15, 2011
Cash and Cash Equivalents [Line Items]
Residual Wind-Down Assets	$ 200	$ 42,800
Funds for Indenture Trustee / Fiscal Paying Agent Costs	100
Total	505,200
Cash and Cash Equivalents and Marketable Securities [Member]
Cash and Cash Equivalents [Line Items]
Distributable Cash (including associated Dividend Cash)	472,070
Other Administrative Cash	31,562
Administrative Fund	1,234
Residual Wind-Down Assets	175	$ 40,000
Funds for Indenture Trustee / Fiscal Paying Agent Costs	114
Total	$ 505,155