Condensed Statements of Cash Flows (Liquidation Basis) - Liquidation Basis of Accounting [Member] - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Cash flows from (used in) operating activities
Cash receipts from interest and dividends	$ 3,094	$ 2,501
Cash paid for professional fees, governance costs and other administrative costs	(2,992)	(3,896)
Cash receipts for refunds		7
Cash paid for distributions		(3)
Net cash flows from (used in) operating activities	102	(1,391)
Cash flows from (used in) investing activities
Cash used to purchase marketable securities	(973,880)	(1,150,111)
Cash from maturities and sales of marketable securities	973,793	1,151,329
Net cash flows (used in) from investing activities	(87)	1,218
Net increase (decrease) in cash and cash equivalents	15	(173)
Cash and cash equivalents, beginning of period	1,825	2,563
Cash and cash equivalents, end of period	$ 1,840	$ 2,390