DERIVATIVE AND HEDGING INSTRUMENTS - Narrative (Details)	6 Months Ended
	Jun. 30, 2015 USD ($)	Jun. 30, 2015 CAD	Dec. 31, 2014 USD ($)	Dec. 31, 2014 CAD
Derivative [Line Items]
Financial liability	$ 1,301,000
Fair value of derivatives in a net liability position	1,600,000
Termination value	1,600,000
Cash Flow Hedges [Member]
Derivative [Line Items]
Losses included in accumulated other comprehensive loss which are expected to be reclassified into earnings in the next 12 months	900,000
Designated as Hedging Instrument [Member]
Derivative [Line Items]
Financial liability	74,147,000		$ 0
Designated as Hedging Instrument [Member] | Cash Flow Hedges [Member] | Interest Rate Cap [Member]
Derivative [Line Items]
Notional amount	$ 200,000,000.0		$ 200,000,000.00
Designated as Hedging Instrument [Member] | Cash Flow Hedges [Member] | Interest Rate Swap [Member]
Derivative [Line Items]
Notional amount | CAD		CAD 90,000,000.0
Designated as Hedging Instrument [Member] | Net Investment Hedges [Member]
Derivative [Line Items]
Financial liability | CAD		90,000,000
Designated as Hedging Instrument [Member] | Net Investment Hedges [Member] | Cross Currency Interest Rate Swaps [Member]
Derivative [Line Items]
Notional amount | CAD		CAD 56,300,000		CAD 0