DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Summary of the Notional Amount and Fair Value of Derivatives) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016
Fair value of derivative instruments
Total fair value derivative assets	$ 4,470	$ 4,136
Total fair value derivative liabilities	(5,961)	(3,987)
Ineffective portion	700
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	$ 18,926
Fixed Interest Rate	2.96%
Total fair value derivative liabilities	$ (286)	(740)
Interest rate swap contracts \| Designated as Hedging Instrument \| Accounts Payable and Accrued Liabilities \| Fixed Interest Rate 1.66%, Maturing May 2020
Fair value of derivative instruments
Notional Amount	$ 40,000
Fixed Interest Rate	1.66%
Total fair value derivative assets	$ 299
Total fair value derivative liabilities		(143)
Interest rate swap contracts \| Designated as Hedging Instrument \| Accounts Payable and Accrued Liabilities \| Fixed Interest Rate 1.14%, Maturing September 2021
Fair value of derivative instruments
Notional Amount	$ 119,359
Fixed Interest Rate	1.14%
Total fair value derivative assets	$ 4,007	3,368
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
Fixed Interest Rate	2.65%
Total fair value derivative liabilities	$ (1,124)	(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
Fixed Interest Rate	2.68%
Total fair value derivative liabilities	$ (2,509)	(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
Fixed Interest Rate	2.62%
Total fair value derivative liabilities	$ (2,042)	(1,015)
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	$ 75,000
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		$ 100,000
Fixed Interest Rate		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
Notional Amount	$ 230,000
Fixed Interest Rate	2.50%
Total fair value derivative assets	$ 164	$ 768
Interest (income) expense	$ (600)

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

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-Name Accounting Standards Codification
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-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)
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