LAND AND SUBSURFACE INTERESTS - Tiger Bay Mitigation (Details)				3 Months Ended				6 Months Ended
	Aug. 01, 2018 a	Jun. 12, 2018 a	Jun. 27, 2017 USD ($) a	Jun. 30, 2018 USD ($) a instrument	Mar. 31, 2018 a	Jun. 30, 2017 a	Mar. 31, 2017 a	Jun. 30, 2018 USD ($) a instrument	Jun. 30, 2017 a	Jun. 08, 2018 item
Real Estate [Line Items]
Land sale acres | a	4,286					81.4	1,587.4
Investment in Joint Venture				$ 6,701,017				$ 6,701,017
Number of state credits awarded | item										355
Area of land sales as a percentage of land holdings	78.00%
Land Sales
Real Estate [Line Items]
Land sale acres | a				32.4	34.9			67.3	1,668.8
Land Sales | Mitigation Bank West of Interstate Ninety Five
Real Estate [Line Items]
Land sales, ownership interest sold (as a percent)		70.00%						70.00%
Land sales, non-controlling interest (as a percent)				30.00%				30.00%
Land sale acres | a		2,492
Land Sales | Third Nadg Land Sale
Real Estate [Line Items]
Land sale acres | a			19.4
Payment made for infrastructure reimbursement			$ 955,000
Consolidated Tomoka Land Co
Real Estate [Line Items]
Land sales, non-controlling interest (as a percent)		30.00%
Interest in the joint venture (as a percent)								30.00%
Investment in Joint Venture				$ 6,700,000				$ 6,700,000
Mitigation Bank
Real Estate [Line Items]
Mitigation credits, Operating Agreement, credit sales, Minimum Sales Requirement, minimum revenue, net of commissions				$ 6,000,000				$ 6,000,000
Mitigation credits, Operating Agreement, credit sales, Minimum Sales Requirement, maximum credits, number | instrument				60				60
Mitigation credits, Operating Agreement, credit sales, Minimum Sales Guarantee, fair value				$ 100,000				$ 100,000
Mitigation credits, Put Right, maximum credits the Company must purchase, per quarter, number | instrument				8.536				8.536
Mitigation credits, Put Right, maximum credits the Company must purchase, per quarter, price to fair value (as a percent)				60.00%				60.00%
Mitigation credits, Put Right, third-party cedit sales, reduction in Put Rights outstanding if sales price equals or exceeds price stipulated by Put Right, ratio				1				1
Mitigation credits, Put Right, maximum potential future payments				$ 27,000,000				$ 27,000,000
Mitigation credits, Put Right, fair value				$ 200,000				$ 200,000
Black Rock
Real Estate [Line Items]
Sale of interest in joint venture		70.00%