EQUITY (Preferred Stock) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2019	Dec. 31, 2018	Jul. 31, 2018
Class of Stock [Line Items]
Dividend rate, percentage	7.00%
Preferred stock, par value (in dollars per share)		$ 0.01	$ 0.01
Redemption price (in dollars per share)			$ 25.00
Preferred Stock [Member]
Class of Stock [Line Items]
Authorized amount				$ 50,000,000.0
Preferred Equity
Class of Stock [Line Items]
Partners' capital (in shares)		12,400,000	12,400,000