DERIVATIVES (Details) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
Sep. 30, 2017 USD ($) N	Sep. 30, 2016 USD ($)	Sep. 30, 2017 USD ($) N	Sep. 30, 2016 USD ($)	Dec. 31, 2016 USD ($) N
Derivative [Line Items]
Interest expense	$ 7,499	$ 5,575	$ 19,733	$ 14,922
Interest Rate Swap [Member] \| Designated as Hedging Instrument [Member]
Derivative [Line Items]
Notional Amount	$ 180,000		$ 180,000		$ 180,000
Weighted average pay rate	1.64%		1.64%		1.64%
Weighted average receive rate	1.30%		1.30%		0.58%
Weighted average maturity			2 years 6 months		3 years 3 months
Unrealized loss			$ 279		$ (744)
Number of contracts \| N	9		9		9
Interest expense	$ 150	494	$ 763	1,500
Amount of Gain/(Loss) Recognized In OCI (Effective Portion)	131	941	605	(1,999)
Amount of Gain/(Loss) Reclassified From OCI to Interest Expense
Amount of Gain/(Loss) Recognized in Other Non-Interest Expense (Ineffective Portion)
Fair Value	279		279		$ (744)
Loan Level Swaps [Member] \| Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Notional Amount	$ 315,689		$ 315,689		$ 126,810
Weighted average pay rate	4.10%		4.10%		3.75%
Weighted average receive rate	3.27%		3.27%		2.65%
Weighted average maturity			7 years 8 months 12 days		9 years 4 months 24 days
Number of contracts \| N	41		41		14
Fair Value	$ 4,136		$ 4,136		$ 1,543
Other Assets [Member] \| Interest Rate Swap [Member] \| Designated as Hedging Instrument [Member]
Derivative [Line Items]
Notional Amount	110,000		110,000		30,000
Fair Value	383		383		123
Other Liabilities [Member] \| Interest Rate Swap [Member] \| Designated as Hedging Instrument [Member]
Derivative [Line Items]
Notional Amount	70,000		70,000		150,000
Fair Value	$ (104)		$ (104)		$ (867)

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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Average remaining period until maturity of the derivative contract, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Fair value of the assets less the liabilities of a derivative or group of derivatives.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 45
-Paragraph 6
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Fixed interest rate related to the interest rate derivative.

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The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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The effective portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period.

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

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Variable interest rate in effect as of the balance sheet date related to the interest rate derivative.

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The net gain (loss) recognized in earnings during the reporting period representing the amount of the cash flow hedges' ineffectiveness.

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Amount of the cost of borrowed funds accounted for as interest expense.

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Amount of unrealized gain (loss) related to derivatives designated as cash flow hedging instruments, recorded in results of operations to the extent that the cash flow hedge is determined to be ineffective.

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