INCOME TAXES - Schedule of Reported Provision for Income Taxes and the U.S. Federal Statutory Rate (Details)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Provision at the statutory rate	21.00%	35.00%	35.00%
Non-taxable REIT income	(25.44%)	(21.72%)	(28.22%)
State and local taxes	(1.19%)	1.76%	0.18%
Change in valuation allowance	(2.31%)	0.85%	0.67%
Change in federal tax rate	0.00%	(0.92%)	0.00%
Other	(0.30%)	(0.17%)	(0.48%)
Total provision	(8.24%)	14.80%	7.15%