Consolidated Statements of Changes in Net Assets - Liquidation Value [Member] - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Net assets in liquidation, beginning of period	$ 322,926	$ 366,850	$ 327,390	$ 362,791
Changes in net assets in liquidation:
Changes in liquidation value of investment in unconsolidated joint venture	3,535	4,213	7,669	13,169
Remeasurement of assets and liabilities	(522)	(559)	(1,900)	(2,098)
Net changes in liquidation value	3,013	3,654	5,769	11,071
Liquidating distributions to unitholders	(2,183)	(4,198)	(9,403)	(7,556)
Changes in net assets in liquidation	830	(544)	(3,634)	3,515
Net assets in liquidation, end of period	$ 323,756	$ 366,306	$ 323,756	$ 366,306