DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Summary of the Notional Amount and Fair Value of Derivatives) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Fair value of derivative instruments
Total fair value derivative assets	$ 3,244		$ 3,244		$ 4,136
Total fair value derivative liabilities	(7,742)		(7,742)		(3,987)
Interest Expense.	17,241	$ 16,102	49,547	$ 48,628
Interest rate swap contracts | Designated as Hedging Instrument | Accounts Payable and Accrued Liabilities | Fixed Interest Rate 2.96%, Maturing October 2019
Fair value of derivative instruments
Notional Amount	$ 19,870		$ 19,870
Fixed Interest Rate	2.96%		2.96%
Total fair value derivative liabilities	$ (427)		$ (427)		(740)
Interest rate swap contracts | Designated as Hedging Instrument | Accounts Payable and Accrued Liabilities | Fixed Interest Rate 2.65%, Maturing December 2027
Fair value of derivative instruments
Notional Amount	$ 50,000		$ 50,000
Fixed Interest Rate	2.65%		2.65%
Total fair value derivative liabilities	$ (1,452)		$ (1,452)		(610)
Interest rate swap contracts | Designated as Hedging Instrument | Accounts Payable and Accrued Liabilities | Fixed Interest Rate 2.68%, Maturing December 2027
Fair value of derivative instruments
Notional Amount	$ 100,000		$ 100,000
Fixed Interest Rate	2.68%		2.68%
Total fair value derivative liabilities	$ (3,165)		$ (3,165)		(1,479)
Interest rate swap contracts | Designated as Hedging Instrument | Accounts Payable and Accrued Liabilities | Fixed Interest Rate 2.62%, Maturing December 2027
Fair value of derivative instruments
Notional Amount	$ 100,000		$ 100,000
Fixed Interest Rate	2.62%		2.62%
Total fair value derivative liabilities	$ (2,698)		$ (2,698)		(1,015)
Interest rate swap contracts | Designated as Hedging Instrument | Prepaid expenses and other assets, net | Fixed Interest Rate 1.66%, Maturing May 2020
Fair value of derivative instruments
Notional Amount	$ 40,000		$ 40,000
Fixed Interest Rate	1.66%		1.66%
Total fair value derivative assets	$ (30)		$ (30)
Total fair value derivative liabilities					(143)
Interest rate swap contracts | Designated as Hedging Instrument | Prepaid expenses and other assets, net | Fixed Interest Rate 1.14%, Maturing September 2021
Fair value of derivative instruments
Notional Amount	$ 119,359		$ 119,359
Fixed Interest Rate	1.14%		1.14%
Total fair value derivative assets	$ 3,069		$ 3,069		3,368
Interest Rate Cap | Designated as Hedging Instrument | Accounts Payable and Accrued Liabilities | Fixed Interest Rate 5.00%, Maturing August 2017
Fair value of derivative instruments
Notional Amount					$ 100,000
Fixed Interest Rate					5.00%
Interest Rate Cap | Designated as Hedging Instrument | Accounts Payable and Accrued Liabilities | Fixed Interest Rate 5.00 Maturing August 2019
Fair value of derivative instruments
Notional Amount	$ 75,000		$ 75,000
Fixed Interest Rate	5.00%		5.00%
Interest Rate Cap | Not Designated as Hedging Instrument, Economic Hedge | Accounts Payable and Accrued Liabilities | Fixed Interest Rate 2.50%, Maturing December 2019
Fair value of derivative instruments
Interest (income) expense	$ (100)		$ (600)
Interest Rate Cap | Not Designated as Hedging Instrument, Economic Hedge | Prepaid expenses and other assets, net | Fixed Interest Rate 2.50%, Maturing December 2019
Fair value of derivative instruments
Notional Amount	$ 230,000		$ 230,000
Fixed Interest Rate	2.50%		2.50%
Total fair value derivative assets	$ 145		$ 145		$ 768