INVESTMENT IN UNCONSOLIDATED JOINT VENTURES (Battery Point Series A-3 Preferred Units) (Details) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
	Mar. 20, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated entities		$ 78,276	$ 44,869
Dividend income		6,099	6,002	$ 2,531
Series A-3 Preferred Units | Battery Point Holdings
Schedule of Equity Method Investments [Line Items]
Obligation to use percent of net proceeds for future equity capital raising	20.00%
Battery Point Series A-3 Preferred Units
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated entities		13,991	$ 0
Battery Point Series A-3 Preferred Units | Series A-3 Preferred Units
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated entities		14,000
Dividend income		$ 300
Point Trust LLC
Schedule of Equity Method Investments [Line Items]
Number of securities received (in shares)	210,000
Price per share (in dollars per share)	$ 25
Stock repurchased during period (in shares)		430,000
Stock repurchased during period		$ 10,800
Point Trust LLC | Series A-3 Preferred Units
Schedule of Equity Method Investments [Line Items]
Redemptions of common stock (in shares)	13,000
Stock redeemed (in dollars per share)	$ 1,000
Aggregate principal balance	$ 13,000
Principal paydow	$ 7,700
Number of securities received (in shares)	210,000
Price per share (in dollars per share)	$ 25
Investments	$ 5,300
Investment, dividends, annual rate	7.50%
Point Trust LLC | Series A-3 Preferred Units | Not Redeemed by February 28, 2020 [Member]
Schedule of Equity Method Investments [Line Items]
Investment, dividends, annual rate	10.00%
Point Trust LLC | Series A-3 Preferred Units | Not Redeemed by February 28, 2021 [Member]
Schedule of Equity Method Investments [Line Items]
Investment, dividends, annual rate	11.00%