DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING - Early Settlement of Interest Rate Swaps and Information about Derivative Financial Instruments Outstanding (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($) Instrument	Dec. 31, 2015 USD ($) Instrument
Derivative financial instruments and hedging
Maximum length of time over which instruments are hedged	6 years
Fair Value
Derivative liability	$ (1,118)	$ (1,811)
Designated as hedges | Interest rate swaps
Number of Instruments
Liability | Instrument	1	1
Total | Instrument	1	1
Notional Amount
Liability	$ 75,000	$ 75,000
Total	75,000	75,000
Fair Value
Derivative liability	(1,118)	(1,811)
Total	$ (1,118)	$ (1,811)