INTEREST RATE SWAPS - NON-HEDGE (Details) - USD ($)	Dec. 31, 2017	Dec. 31, 2016
Information about derivatives and swaps
Fair value of investment securities pledged as collateral	$ 262,902,000	$ 231,891,000
Counterparty
Information about derivatives and swaps
Fair value of investment securities pledged as collateral	1,500,000	1,800,000
Counterparty \| Minimum
Information about derivatives and swaps
Net loss position in which pledged securities as collateral are required	250,000
Interest rate swap \| Non-Hedge
Information about derivatives and swaps
Notional amount	122,838,000	63,106,000
Fair Value		101,000
Interest rate swap \| Non-Hedge \| Bank Clients
Information about derivatives and swaps
Notional amount	61,419,000	31,553,000
Fair Value	84,000	156,000
Interest rate swap \| Non-Hedge \| Counterparty
Information about derivatives and swaps
Notional amount	61,419,000	31,553,000
Fair Value	$ (84,000)	$ (55,000)

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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- Definition

Represents the net loss position of derivative swaps in which the entity is required to pledge securities.

+ References

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Fair value as of the balance sheet date of all interest rate derivatives designated as cash flow hedging instruments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958

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- Definition

Fair value of financial instrument held by the entity for its own account (proprietary securities) for trading or investment purposes that are carried at fair value and pledged to counterparties as collateral for financing transactions.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 30
-Section 50
-Paragraph 1A
-Subparagraph (b)(1)(i)
-URI http://asc.fasb.org/extlink&oid=64858031&loc=SL6224234-111729

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=66007379&loc=d3e113888-111728

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