Net Assets in Liquidation - Additional Information (Detail) - USD ($)				3 Months Ended
	Jul. 01, 2019	Feb. 01, 2019	Mar. 31, 2011	Jun. 30, 2019	Mar. 31, 2019
Net Assets in Liquidation [Line Items]
Distributable Assets				$ 457,900,000
Cash and cash equivalents and marketable securities				505,200,000
Distributable Cash set aside for projected Trust fees, costs and expenses				12,400,000
Distributable cash pending distribution or set aside and not available for distribution				14,200,000
Accrued investment income				11,500,000	$ 30,300,000
Decrease in accrued investment income				18,800,000
Amount required to issue one Trust Unit per contingent rights			$ 1,000
Motion filed to appropriate distributable cash		$ 13,720,000
Noticing Costs [Member] | Maximum [Member]
Net Assets in Liquidation [Line Items]
Loss contingency Inestimable loss		$ 13,720,000
Subsequent Event [Member]
Net Assets in Liquidation [Line Items]
Distributions for new allowed general unsecured claims	$ 68,500,000
Recoveries by the avoidance action trust and corresponding new allowed general unsecured claims	231,000,000
Avoidance Action Trust Proposed Agreement [Member] | Subsequent Event [Member]
Net Assets in Liquidation [Line Items]
Term Loan Avoidance Action Claims Allowed	$ 231,000,000
Liquidation Basis of Accounting [Member]
Net Assets in Liquidation [Line Items]
Liquidating distributions payable				1,785,000	1,785,000
Accrued investment income				$ 12,705,000	$ 31,552,000