Condensed Statements of Cash Flows (Liquidation Basis) (Liquidation Basis of Accounting [Member], USD $) In Thousands, unless otherwise specified	9 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Liquidation Basis of Accounting [Member]
Cash flows from (used in) operating activities
Cash receipts from dividends and interest	$ 12,678	$ 50
Cash paid for professional fees, governance costs and other administrative costs	(9,449)	(16,194)
Cash paid for Residual Wind-Down Claims	(2,011)	(1,451)
Cash receipts for refund due others	379
Cash paid for distributions	(3,528)	(581)
Net cash flows used in operating activities	(1,931)	(18,176)
Cash flows from (used in) investing activities
Cash used to purchase marketable securities	(66,302)	(97,020)
Cash from maturities and sales of marketable securities	78,597	124,081
Net cash flows from investing activities	12,295	27,061
Cash flows from financing activities
Cash from sale of New GM Securities for distribution	212	28
Net cash flows from financing activities	212	28
Net increase in cash and cash equivalents	10,576	8,913
Cash and cash equivalents, beginning of period	14,932	1,010
Cash and cash equivalents, end of period	$ 25,508	$ 9,923