DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES - AOCI (Details)		3 Months Ended		6 Months Ended
	Aug. 03, 2017 USD ($) swap	Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance				$ 966,589,000	$ 1,297,347,000
Ending balance		$ 646,481,000	$ 1,063,971,000	646,481,000	1,063,971,000
Amount of derivatives reclassified out of AOCI				1,108,000
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance		1,043,000	(10,444,000)	(509,000)	(2,519,000)
Other comprehensive income (loss) before reclassifications		(983,000)	(3,535,000)	(189,000)	(12,568,000)
Amounts reclassified from accumulated other comprehensive income (loss)		543,000	1,090,000	1,301,000	2,198,000
Net current period other comprehensive income (loss)		(440,000)	(2,445,000)	1,112,000	(10,370,000)
Ending balance		603,000	$ (12,889,000)	603,000	$ (12,889,000)
Subsequent Event
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Number of swaps terminated | swap	3
Notional amount of terminated swaps	$ 65,000,000
Payment of derivative fees and accrued interest	38,000
Swaps Terminated in July 2017 | Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Ending balance		$ 101,000		$ 101,000
Unsecured Term Loan Facility Entered Into May 2015 | Subsequent Event
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Repayments of debt	$ 65,000,000