INCOME TAXES - Narrative (Details) - USD ($)		3 Months Ended				12 Months Ended
	Apr. 12, 2019	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2017	Dec. 31, 2018
Income Tax Disclosure [Line Items]
Percent of valuation allowance		100.00%
Net income (loss)		$ 1,474,767	$ 11,315,000	$ 11,315,000	$ 11,315,000
Net operating loss carryforwards		1,000,000
Accrued tax liability from REIT Testing			$ 1,960,000			$ 1,960,000
Internal Revenue Service (IRS) | Subsequent Event
Income Tax Disclosure [Line Items]
Income taxes, interest paid	$ 1,960,000
Subsidiaries
Income Tax Disclosure [Line Items]
Net income (loss)		$ 100,000		$ 270,000		$ 1,300,000