DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING - Schedule of derivative financial instruments (Details) $ in Thousands	Jun. 30, 2017 USD ($) Instrument	Dec. 31, 2016 USD ($) Instrument
Fair Value
Net liability	$ (595)	$ (1,118)
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
Liability	(595)	(1,118)
Net liability	$ (595)	$ (1,118)

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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Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 20
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Nominal or face amount used to calculate payments on the derivative liability.

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The number of derivative instruments of a particular derivative liability or group of derivative liabilities held by the entity.

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The number of derivative instruments of a particular group held by the entity.

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