DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Summary of the Notional Amount and Fair Value of Derivatives) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Fair value of derivative instruments
Total fair value derivative assets	$ 4,136	$ 1
Total fair value derivative liabilities	(3,987)	(4,218)
Interest Rate Swap | Accounts Payable and Accrued Liabilities | Fixed Interest Rate 2.96%, Maturing October 2019 [Member]
Fair value of derivative instruments
Notional Amount	$ 22,703
Fixed Interest Rate	2.96%
Total fair value derivative liabilities	$ (740)	(1,185)
Interest Rate Swap | Accounts Payable and Accrued Liabilities | Fixed Interest Rate 1.30%, Maturing September 2016 [Member]
Fair value of derivative instruments
Notional Amount	$ 143,000
Fixed Interest Rate	1.30%
Total fair value derivative liabilities		(747)
Interest Rate Swap | Accounts Payable and Accrued Liabilities | Fixed Interest Rate 1.66%, Maturing May 2020 [Member]
Fair value of derivative instruments
Notional Amount	$ 40,000
Fixed Interest Rate	1.66%
Total fair value derivative liabilities	$ (143)	(361)
Interest Rate Swap | Accounts Payable and Accrued Liabilities | Fixed Interest Rate 1.14%, Maturing September 2021 [Member]
Fair value of derivative instruments
Notional Amount	$ 119,359
Fixed Interest Rate	1.14%
Total fair value derivative assets	$ 3,368
Interest Rate Swap | Accounts Payable and Accrued Liabilities | Fixed Interest Rate 2.65%, Maturing December 2027 [Member]
Fair value of derivative instruments
Notional Amount	$ 50,000
Fixed Interest Rate	2.65%
Total fair value derivative liabilities	$ (610)	(377)
Interest Rate Swap | Accounts Payable and Accrued Liabilities | Fixed Interest Rate 2.68%, Maturing December 2027 [Member]
Fair value of derivative instruments
Notional Amount	$ 100,000
Fixed Interest Rate	2.68%
Total fair value derivative liabilities	$ (1,479)	(1,003)
Interest Rate Swap | Accounts Payable and Accrued Liabilities | Fixed Interest Rate 2.62%, Maturing December 2027 [Member]
Fair value of derivative instruments
Notional Amount	$ 100,000
Fixed Interest Rate	2.62%
Total fair value derivative liabilities	$ (1,015)	(545)
Cap | Accounts Payable and Accrued Liabilities | Fixed Interest Rate 5.00%, Maturing August 2017 [Member]
Fair value of derivative instruments
Notional Amount	$ 100,000
Fixed Interest Rate	5.00%
Total fair value derivative assets		$ 1
Cap | Accounts Payable and Accrued Liabilities | Fixed Interest Rate 2.50%, Maturing December 2019 [Member]
Fair value of derivative instruments
Notional Amount	$ 230,000
Fixed Interest Rate	2.50%
Total fair value derivative assets	$ 768