INCOME TAXES - SEC Simplification (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Tax (provision)/benefit, net	$ 688	$ (240)	$ 11,574
Previously Reported
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Tax (provision)/benefit, net			(3,774)
Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Tax impact of sales of real estate owned			15,348
TRS
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Tax (provision)/benefit, net	688	(240)	11,574
TRS | Continuing Operations
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Tax (provision)/benefit, net	$ 688	$ (240)	11,574
TRS | Continuing Operations | Previously Reported
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Tax (provision)/benefit, net			(3,774)
TRS | Continuing Operations | Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Tax impact of sales of real estate owned			(15,348)
TRS | Sale of Real Estate | Previously Reported
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Tax (provision)/benefit, net			15,348
TRS | Sale of Real Estate | Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Tax impact of sales of real estate owned			$ (15,348)