NET ASSETS IN LIQUIDATION - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands			8 Months Ended
	Aug. 03, 2020	Mar. 05, 2020	Sep. 30, 2020	Jul. 31, 2020
Assets in Liquidation [Abstract]
Decrease in assets, net			$ 259,300
Initial liquidating distribution (in dollars per share)		$ 0.75
Aggregate cash distributions		$ 138,900
Second liquidation distribution (in dollars per share)				$ 0.25
Aggregate cash distributions	$ 46,200
Additional estimated liquidation distribution (in dollars per share)			$ 2.41
Real Estate Properties [Line Items]
Percentage of real estate occupied			74.00%
Aggregate cash distributions		$ 138,900
Office Properties
Assets in Liquidation [Abstract]
Decrease in real estate property values, COVID-19			$ 71,200
Office Properties | Union Bank Plaza
Real Estate Properties [Line Items]
Decrease in estimated net proceeds from sale			$ 38,100
Percentage of real estate occupied			71.00%
Office Properties | Granite Tower
Real Estate Properties [Line Items]
Decrease in estimated net proceeds from sale			$ 24,000
Percentage of real estate occupied			82.00%
Percent of real estate property occupied by oil and gas industry tenants			50.00%
Other Properties
Real Estate Properties [Line Items]
Decrease in estimated net proceeds from sale			$ 9,100