FAIR VALUE OF FINANCIAL INSTRUMENTS, Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) $ in Thousands	Mar. 31, 2017 USD ($) Security	Dec. 31, 2016 USD ($) Security
Registered Mutual Funds [Abstract]
Impaired loans measured at fair value	$ 0	$ 0
Trust Preferred Securities, Number \| Security	7	7
Recurring [Member]
Trading securities (Registered Mutual Funds) [Abstract]
Domestic Equity Mutual Funds	$ 955	$ 873
International Equity Mutual Funds	241	213
Fixed Income Mutual Funds	5,957	5,867
Registered Mutual Funds [Abstract]
Domestic Equity Mutual Funds	1,422	1,356
International Equity Mutual Funds	407	377
Fixed Income Mutual Funds	2,172	2,162
Pass-through MBS issued by GSEs	357	372
Agency CMOs	3,163	3,186
Derivative - interest rate product	3,576	3,228
Recurring [Member] \| Level 1 Inputs [Member]
Trading securities (Registered Mutual Funds) [Abstract]
Domestic Equity Mutual Funds	955	873
International Equity Mutual Funds	241	213
Fixed Income Mutual Funds	5,957	5,867
Registered Mutual Funds [Abstract]
Domestic Equity Mutual Funds	1,422	1,356
International Equity Mutual Funds	407	377
Fixed Income Mutual Funds	2,172	2,162
Pass-through MBS issued by GSEs	0	0
Agency CMOs	0	0
Derivative - interest rate product	0	0
Recurring [Member] \| Level 2 Inputs [Member]
Trading securities (Registered Mutual Funds) [Abstract]
Domestic Equity Mutual Funds	0	0
International Equity Mutual Funds	0	0
Fixed Income Mutual Funds	0	0
Registered Mutual Funds [Abstract]
Domestic Equity Mutual Funds	0	0
International Equity Mutual Funds	0	0
Fixed Income Mutual Funds	0	0
Pass-through MBS issued by GSEs	357	372
Agency CMOs	3,163	3,186
Derivative - interest rate product	3,576	3,228
Recurring [Member] \| Level 3 Inputs [Member]
Trading securities (Registered Mutual Funds) [Abstract]
Domestic Equity Mutual Funds	0	0
International Equity Mutual Funds	0	0
Fixed Income Mutual Funds	0	0
Registered Mutual Funds [Abstract]
Domestic Equity Mutual Funds	0	0
International Equity Mutual Funds	0	0
Fixed Income Mutual Funds	0	0
Pass-through MBS issued by GSEs	0	0
Agency CMOs	0	0
Derivative - interest rate product	0	0
Nonrecurring [Member]
Registered Mutual Funds [Abstract]
Assets measured at fair value	$ 0	$ 0

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- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents Registered Domestic Equity Mutual Funds categorized as Available-for-sale Securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities which are categorized as Available-for-sale.

+ References

No definition available.

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This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents Registered Fixed Income Mutual Funds categorized as Available-for-sale Securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities which are categorized as Available-for-sale.

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No definition available.

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This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents Registered International Equity Mutual Funds categorized as Available-for-sale Securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities which are categorized as Available-for-sale.

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- Definition

The principal balance outstanding as of the date indicated on impaired loans that are measured at fair value.

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- Definition

The number of trust preferred securities designated as held-to-maturity that are owned by the entity.

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- Definition

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258

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Fair value, before effects of master netting arrangements, of a financial asset or other 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 assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-Subparagraph (a),(c)
-URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624163-113959

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 55
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=51825145&loc=SL20226000-175313

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 20
-Section 50
-Paragraph 4D
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=64830801&loc=SL51823488-111719

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