COMMITMENTS AND CONTINGENCIES - Other Matters (Details)				3 Months Ended					12 Months Ended		24 Months Ended	27 Months Ended
	May 01, 2018 a	Jun. 30, 2017 a item	Jun. 30, 2016 USD ($)	Mar. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Jun. 30, 2017 USD ($) a	Mar. 31, 2017 USD ($) a	Jun. 30, 2016 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2015 USD ($) a	Mar. 31, 2018 USD ($)	Mar. 31, 2018 USD ($)	Feb. 21, 2018 USD ($)
Contingencies
Acres sold | a	6,007
Escrow balance				$ 3,148,997	$ 6,508,131		$ 5,882,767		$ 6,508,131		$ 3,148,997	$ 3,148,997	$ 1,200,000
Unfavorable regulatory action
Contingencies
Accrued loss contingency										$ 187,500
Wintergreen Advisers, LLC maters
Contingencies
Cost incurred									1,600,000		3,000,000
Legal representation and third party costs				523,000					1,200,000
Minto Communities LLC
Contingencies
Acres sold | a							1,581
Number of mitigation credits required to be utilized | item		36
Land Sales
Contingencies
Acres sold | a							1,587.4
Wetlands restoration
Contingencies
Acres | a										148.4
Estimated cost			$ 2,000,000	2,000,000				$ 2,000,000				2,000,000
Increase in accrual of remediation costs								$ 300,000
Environmental costs funded				1,300,000								1,300,000
Accrued restoration cost				$ 700,000			$ 708,000			$ 1,700,000	$ 700,000	$ 700,000
Wetlands restoration | Minto Communities LLC
Contingencies
Cash deposited in (refunded from) escrow					189,500		$ 423,000
Escrow balance					$ 234,000				$ 234,000
Wetlands restoration | Minimum
Contingencies
Estimated cost										1,700,000
Wetlands restoration | Maximum
Contingencies
Estimated cost										$ 1,900,000
Mitigation activities
Contingencies
Acres | a		54.66				54.66
Mitigation credits transferred						$ 298,000