ACCOUNTING POLICIES - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Accounting Policies [Line Items]
Percentage of taxable income to be distributed	100.00%
Minimum [Member]
Accounting Policies [Line Items]
Interest owed on hedged borrowings reset to market rates	30 days
Maximum [Member]
Accounting Policies [Line Items]
Interest owed on hedged borrowings reset to market rates	90 days
ASU 2017-12 [Member] | Accumulated Deficit [Member]
Accounting Policies [Line Items]
Reclassification of ineffectiveness income on designated swaps to accumulated deficit	$ 105,000
Compensation-Related Expense [Member]
Accounting Policies [Line Items]
Reclassification of separation of service charge to compensation-related expense		$ 3,000,000