ASSETS AND LIABILITIES HELD FOR SALE AND DISCONTINUED OPERATIONS - Assets and Liabilities Held for Sale (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Assets held for sale
Property, Plant, and Equipment-Net	$ 3,635
Restricted Cash	833	$ 833
Intangible Lease Assets - Net	65
Intangible Lease Liabilities - Net	(28)
Total Assets Held for Sale	4,505	833
Liabilities held for sale
Deferred Revenue	(831)	(831)
Total Liabilities Held for Sale	(831)	(831)
Land JV Assets
Assets held for sale
Restricted Cash	833	833
Total Assets Held for Sale	833	833
Land JV Liabilities
Liabilities held for sale
Deferred Revenue	(831)	(831)
Total Liabilities Held for Sale	(831)	$ (831)
Single-Tenant Income Properties
Assets held for sale
Property, Plant, and Equipment-Net	3,635
Intangible Lease Assets - Net	65
Intangible Lease Liabilities - Net	(28)
Total Assets Held for Sale	$ 3,672