DEFERRED REVENUE - Summary of Deferred Revenue (Details) - USD ($)	Mar. 31, 2019	Dec. 31, 2018
DEFERRED REVENUE
Deferred Oil Exploration Lease Revenue	$ 386,767	$ 585,675
Deferred Revenue on Land Sales	831,320	831,320
Prepaid Rent	1,254,818	1,621,620
Tenant Contributions	4,042,250	4,104,151
Other Deferred Revenue	107,098	58,838
Total Deferred Revenue	$ 6,622,253	$ 7,201,604