REAL ESTATE OPERATIONS - Real Estate Operations Revenues (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenues
Revenue from contract with customer, including assessed tax	$ 81,000	$ 235,000
Subsurface Revenue	77,000	208,000
Total Revenues	12,838,432	10,959,319
Real Estate Operations
Revenues
Total Revenues	80,751	234,901
Impact Fee and Mitigation Credit Sales
Revenues
Revenue from contract with customer, including assessed tax	$ 4,000
Fill Dirt and Other Revenue
Revenues
Revenue from contract with customer, including assessed tax		$ 27,000