Condensed Statements of Changes in Net Assets in Liquidation (Liquidation Basis) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Increase (decrease) in net assets in liquidation:
Net additions to reserves for Expected Costs of Liquidation (Note 6)	$ (5,315)	$ (7,967)	$ (5,043)	$ (10,298)
Net change in fair value of holdings of New GM Securities		(48,221)		(175,229)
Liquidation Basis of Accounting [Member]
Net Assets in Liquidation, beginning of period	611,376	786,385	611,773	944,736
Increase (decrease) in net assets in liquidation:
Liquidating distributions (Note 4)	(107,058)	(117,280)	(107,971)	(124,420)
Dividends and interest income (net reversal) (Note 3)	1,002	381	1,246	(21,491)
Net decrease in net assets in liquidation	(111,371)	(173,087)	(111,768)	(331,438)
Net Assets in Liquidation, end of period	$ 500,005	$ 613,298	$ 500,005	$ 613,298