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LOANS - Recorded Investment and Number of Modifications (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017 USD ($) modification	Sep. 30, 2016 USD ($) modification	Sep. 30, 2017 USD ($) modification	Sep. 30, 2016 USD ($) modification
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (in modification) | modification	9	5	18	10
Pre-Modification Outstanding Recorded Investment	$ 627	$ 996	$ 1,713	$ 1,451
Post-Modification Outstanding Recorded Investment	$ 627	$ 975	$ 1,625	$ 1,410
Commercial and Industrial: | Commercial installment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (in modification) | modification	5	2	6	2
Pre-Modification Outstanding Recorded Investment	$ 483	$ 51	$ 563	$ 51
Post-Modification Outstanding Recorded Investment	$ 483	$ 51	$ 549	$ 51
Commercial and Industrial: | Agricultural and other loans to farmers
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (in modification) | modification	0		1	2
Pre-Modification Outstanding Recorded Investment	$ 0		$ 19	$ 30
Post-Modification Outstanding Recorded Investment	$ 0		$ 18	$ 24
Commercial Real Estate: | Other commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (in modification) | modification	4	2	6	5
Pre-Modification Outstanding Recorded Investment	$ 144	$ 936	$ 388	$ 1,361
Post-Modification Outstanding Recorded Investment	$ 144	$ 915	$ 333	$ 1,326
Residential Real Estate: | Residential mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (in modification) | modification	0		3
Pre-Modification Outstanding Recorded Investment	$ 0		$ 692
Post-Modification Outstanding Recorded Investment	$ 0		$ 675
Consumer: | Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (in modification) | modification	0		1
Pre-Modification Outstanding Recorded Investment	$ 0		$ 13
Post-Modification Outstanding Recorded Investment	$ 0		$ 13
Consumer: | Other consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (in modification) | modification	0	1	1	1
Pre-Modification Outstanding Recorded Investment	$ 0	$ 9	$ 38	$ 9
Post-Modification Outstanding Recorded Investment	$ 0	$ 9	$ 37	$ 9

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Number of financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953676-111524

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953676-111524

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953676-111524

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