REVENUE RECOGNITION - Timing of Revenue Recognition (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenues
Revenue from contract with customer, including assessed tax	$ 13,427	$ 650	$ 852
Over Lease Term	50,351	49,392	42,453
Commercial Loan Investment Related Revenue		3,034	1,829
Total Revenues	70,272	56,381	44,941
Asset/Good Transferred at a Point in Time
Revenues
Revenue from contract with customer, including assessed tax	13,427	6	254
Services Transferred Over Time
Revenues
Revenue from contract with customer, including assessed tax	3,633	3,949	405
Income Properties
Revenues
Over Lease Term	50,351	49,392	41,855
Total Revenues	50,679	49,953	41,956
Income Properties | Services Transferred Over Time
Revenues
Revenue from contract with customer, including assessed tax	328	561	101
Management Fee Income
Revenues
Total Revenues	3,305	2,744	304
Management Fee Income | Services Transferred Over Time
Revenues
Revenue from contract with customer, including assessed tax	3,305	2,744	304
Interest Income from Commercial Loan and Master Lease Investments
Revenues
Commercial Loan Investment Related Revenue	2,861	3,034	1,829
Total Revenues	2,861	3,034	1,829
Real Estate Operations
Revenues
Over Lease Term			598
Total Revenues	13,427	650	852
Real Estate Operations | Asset/Good Transferred at a Point in Time
Revenues
Revenue from contract with customer, including assessed tax	$ 13,427	6	$ 254
Real Estate Operations | Services Transferred Over Time
Revenues
Revenue from contract with customer, including assessed tax		$ 644