Condensed Statements of Changes in Net Assets in Liquidation (Liquidation Basis) - Liquidation Basis of Accounting [Member] - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
Net Assets in Liquidation, beginning of period	$ 500,005	$ 613,298	$ 611,773	$ 944,736
Increase (decrease) in net assets in liquidation:
Net (additions to) reductions in reserves for Expected Costs of Liquidation and Residual Wind-Down Claims and Costs (Note 6)	(13,394)	2,474	(18,437)	(7,824)
Liquidating distributions (Note 4)	(27)	(2,717)	(107,998)	(127,137)
Net change in fair value of holdings of New GM Securities				(175,229)
Dividends and interest income (net reversal) (Note 3)	80	6	1,326	(21,485)
Other income		43		43
Net decrease in net assets in liquidation	(13,341)	(194)	(125,109)	(331,632)
Net Assets in Liquidation, end of period	$ 486,664	$ 613,104	$ 486,664	$ 613,104