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SECURITIES SOLD UNDER AGREEMENTS TO REPURCHASE (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Summary of securities sold under agreements to repurchase [Abstract]
Securities sold under agreements to repurchase	$ 27,606	$ 28,453	$ 29,652
Maximum month-end balance	30,497	32,145	31,914
Average balance during year	$ 29,120	$ 30,236	$ 30,667
Weighted-average interest rate at December 31	3.02%	2.93%	2.82%
Average interest rate paid during year	2.92%	2.80%	2.77%
Securities sold under agreements to repurchase	$ 38,276	$ 43,856
Excess collateral held	(10,670)	(15,403)
Securities sold under agreements to repurchase	27,606	28,453	$ 29,652
Overnight and Continuous
Summary of securities sold under agreements to repurchase [Abstract]
Securities sold under agreements to repurchase	7,606	8,453
Securities sold under agreements to repurchase	13,092	20,443
Excess collateral held	(5,486)	(11,990)
Securities sold under agreements to repurchase	7,606	8,453
Up to 1 Year
Summary of securities sold under agreements to repurchase [Abstract]
Securities sold under agreements to repurchase	10,000	10,000
Securities sold under agreements to repurchase	10,940	10,955
Excess collateral held	(940)	(955)
Securities sold under agreements to repurchase	10,000	10,000
1 - 3 Years
Summary of securities sold under agreements to repurchase [Abstract]
Securities sold under agreements to repurchase	10,000	10,000
Securities sold under agreements to repurchase	14,244	12,458
Excess collateral held	(4,244)	(2,458)
Securities sold under agreements to repurchase	10,000	10,000
3 Years
Summary of securities sold under agreements to repurchase [Abstract]
Securities sold under agreements to repurchase	0	0
Securities sold under agreements to repurchase	0	0
Excess collateral held	0	0
Securities sold under agreements to repurchase	0	0
Obligations of U.S. Government and U.S. Government sponsored enterprises
Summary of securities sold under agreements to repurchase [Abstract]
Securities sold under agreements to repurchase	1,276	23,267
Obligations of U.S. Government and U.S. Government sponsored enterprises | Overnight and Continuous
Summary of securities sold under agreements to repurchase [Abstract]
Securities sold under agreements to repurchase	0	12,163
Obligations of U.S. Government and U.S. Government sponsored enterprises | Up to 1 Year
Summary of securities sold under agreements to repurchase [Abstract]
Securities sold under agreements to repurchase	1,276	1,781
Obligations of U.S. Government and U.S. Government sponsored enterprises | 1 - 3 Years
Summary of securities sold under agreements to repurchase [Abstract]
Securities sold under agreements to repurchase	0	9,323
Obligations of U.S. Government and U.S. Government sponsored enterprises | 3 Years
Summary of securities sold under agreements to repurchase [Abstract]
Securities sold under agreements to repurchase	0	0
Mortgage-backed securities, residential
Summary of securities sold under agreements to repurchase [Abstract]
Securities sold under agreements to repurchase	37,000	20,589
Mortgage-backed securities, residential | Overnight and Continuous
Summary of securities sold under agreements to repurchase [Abstract]
Securities sold under agreements to repurchase	13,092	8,280
Mortgage-backed securities, residential | Up to 1 Year
Summary of securities sold under agreements to repurchase [Abstract]
Securities sold under agreements to repurchase	9,664	9,174
Mortgage-backed securities, residential | 1 - 3 Years
Summary of securities sold under agreements to repurchase [Abstract]
Securities sold under agreements to repurchase	14,244	3,135
Mortgage-backed securities, residential | 3 Years
Summary of securities sold under agreements to repurchase [Abstract]
Securities sold under agreements to repurchase	$ 0	$ 0

X

- Definition

Refers to the average interest rate paid during year on assets under repurchase agreement.

+ References

No definition available.

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Maximum month end carrying value as of the balance sheet date of securities that an institution sells and agrees to repurchase (the identical or substantially the same securities) as a seller-borrower at a specified date for a specified price, also known as a repurchase agreement, or repo. Most repos involve obligations of the federal government or its agencies, but other financial instruments, such as commercial paper, banker's acceptances, and negotiable certificates of deposit, are sometimes used in repos.

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Average balance over period for the carrying value as of the balance sheet date of securities that an institution sells and agrees to repurchase (the identical or substantially the same securities) as a seller-borrower at a specified date for a specified price, also known as a repurchase agreement, or repo. Most repos involve obligations of the federal government or its agencies, but other financial instruments, such as commercial paper, banker's acceptances, and negotiable certificates of deposit, are sometimes used in repos.

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Interest rate on the amount to be repaid to the counterparty to the repurchase agreement when the carrying amount (or market value, if higher than the carrying amount) of securities or other assets sold under the repurchase agreement exceeds 10 percent of total assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(m)(1)(i)(A)(ii))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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Amount, after the effects of master netting arrangements, of funds outstanding borrowed in the form of a security repurchase agreement between the entity and another party for the sale and repurchase of identical or substantially the same securities at a date certain for a specified price. 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
-Topic 210
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (c)
-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 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(m)(1)(a)(i))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.13(1))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 55
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=51825145&loc=SL20226008-175313

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-Topic 210
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-Section 45
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-URI http://asc.fasb.org/extlink&oid=49176635&loc=d3e9760-107771

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Repurchase Agreement Accounted for as a Collateralized Borrowing
-URI http://asc.fasb.org/extlink&oid=49203159

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- Definition

Fair value of securities pledged as collateral against securities sold under agreement to repurchase.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 55
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=51825145&loc=SL20226013-175313

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Repurchase Agreement Accounted for as a Collateralized Borrowing
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Amount, before effects of master netting arrangements, of funds outstanding borrowed in the form of a security repurchase agreement between the entity and another party for the sale and repurchase of identical or substantially the same securities at a date certain for a specified price. Includes liabilities elected not to be offset. Excludes liabilities 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 55
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=51825145&loc=SL20226000-175313

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Repurchase Agreement Accounted for as a Collateralized Borrowing
-URI http://asc.fasb.org/extlink&oid=49203159

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-Section 50
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