DEFERRED REVENUE - Rent Paid in Advance (Details) - USD ($)			3 Months Ended		9 Months Ended
	Feb. 21, 2018	Oct. 11, 2017	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018	Mar. 31, 2018	Sep. 20, 2017	Dec. 31, 2011
Deferred revenue
Lease revenue			$ 9,676,000		$ 29,604,000
Tenant contribution					1,000,000
Period over which rent received in advance is recognized		12 months
Total deferred revenue			7,457,665		7,457,665		$ 7,201,604
Tenant Contributions						$ 1,900,000
Acquisition of Property, Plant, and Equipment and Intangible Lease Assets and Liabilities					75,313,805	29,399,109
Master tenant funded incurred related to property acquisition from their leasing reserve escrow			935,000		935,000
Aggregate contributions related to total acquisition cost will be recognized into income property rental revenue over the remaining term of the lease			29,000,000		29,000,000
Oil exploration
Deferred revenue
Lease revenue			186,000	$ 203,000	586,000	603,000
Lease Payment			10,633,805		$ 10,633,805
Number of days granted for lease extension					30 days
Aspen, Colorado
Deferred revenue
Lease revenue					$ 193,000
Total deferred revenue			2,200,000		2,200,000
Tenant Contributions	$ 1,500,000				1,500,000
Acquisition of Property, Plant, and Equipment and Intangible Lease Assets and Liabilities	$ 28,000,000
Florida
Deferred revenue
Lease revenue					199,000
Total deferred revenue			$ 1,700,000		1,700,000
Tenant Contributions					$ 1,900,000
Maximum | Oil exploration
Deferred revenue
Lease term			8 years		8 years				13 years	8 years
Lease Payment			$ 807,000		$ 807,000
Buc'ees - East of I-95
Deferred revenue
Escrow reserve				831,000		831,000		$ 831,000
Remaining gain to be recognized				$ 831,000		$ 831,000		831,000
Total deferred revenue								$ 25,000
Cocina 214
Deferred revenue
Lease revenue					$ 690,000,000