Net Assets in Liquidation - Schedule of Cash and Cash Equivalent and Marketable Securities (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Mar. 31, 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	435,600	$ 505,100
Cash and Cash Equivalents and Marketable Securities [Member]
Cash and Cash Equivalents [Line Items]
Distributable Cash (including associated Dividend Cash)	393,431	472,070
Other Administrative Cash	40,767	31,445
Administrative Fund	1,161	1,246
Residual Wind-Down Assets	178	175	$ 40,000
Funds for Indenture Trustee / Fiscal Paying Agent Costs	90	117
Total	$ 435,627	$ 505,053