Net Assets in Liquidation - Additional Information (Detail)				3 Months Ended
	May 03, 2018 USD ($)	May 02, 2018 USD ($)	Mar. 31, 2011 USD ($) Unit	Jun. 30, 2018 USD ($)	Mar. 31, 2018 USD ($)
Net Assets in Liquidation [Line Items]
Distributable Assets				$ 457,900,000
Cash and cash equivalents and marketable securities				506,400,000
Distributable Cash set aside for projected Trust fees, costs and expenses				24,800,000
Distributable cash pending distribution or set aside and not available for distribution				26,600,000
Motion for Appropriation of Distributable Cash for satisfying noticing costs		$ 6,000,000
Motion for Appropriation of Distributable Cash for satisfying settlement payment	$ 15,000,000
Settlement payment obligation				15,000,000
Accrued investment income				12,300,000	$ 16,700,000
Decrease in accrued investment income				(4,400,000)
Number of Trust Units issued per thousand dollars of allowed general unsecured claims | Unit			1
Amount required to issue one Trust Unit per contingent rights			$ 1,000
Contingent settlement payment					15,000,000
Avoidance Action Trust Proposed Agreement [Member]
Net Assets in Liquidation [Line Items]
Term loan avoidance action claims allowed				2,000
Liquidation Basis of Accounting [Member]
Net Assets in Liquidation [Line Items]
Liquidating distributions payable				1,823,000	1,825,000
Accrued investment income				$ 12,710,000	$ 17,495,000