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LOANS - Recorded Investment and Number of Modifications (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018 USD ($) modification	Sep. 30, 2017 USD ($) modification	Sep. 30, 2018 USD ($) modification	Sep. 30, 2017 USD ($) modification
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (in modification) | modification	9	9	36	18
Pre-Modification Outstanding Recorded Investment	$ 406	$ 627	$ 5,478	$ 1,713
Post-Modification Outstanding Recorded Investment	$ 358	$ 627	$ 4,323	$ 1,625
Total commercial real estate | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (in modification) | modification	1	0	1	0
Pre-Modification Outstanding Recorded Investment	$ 2	$ 0	$ 2	$ 0
Post-Modification Outstanding Recorded Investment	$ 1	$ 0	$ 1	$ 0
Total commercial real estate | Other commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (in modification) | modification	1	4	9	6
Pre-Modification Outstanding Recorded Investment	$ 72	$ 144	$ 1,896	$ 388
Post-Modification Outstanding Recorded Investment	$ 72	$ 144	$ 1,564	$ 333
Commercial and industrial | Other Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (in modification) | modification	5	5	7	6
Pre-Modification Outstanding Recorded Investment	$ 104	$ 483	$ 556	$ 563
Post-Modification Outstanding Recorded Investment	$ 60	$ 483	$ 486	$ 549
Commercial and industrial | Agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (in modification) | modification	0	0	1	1
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 167	$ 19
Post-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 0	$ 18
Commercial and industrial | Tax exempt
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (in modification) | modification	0	0	0	0
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 0	$ 0
Post-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 0	$ 0
Residential Real Estate | Residential mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (in modification) | modification	2	0	15	3
Pre-Modification Outstanding Recorded Investment	$ 228	$ 0	$ 2,752	$ 692
Post-Modification Outstanding Recorded Investment	$ 225	$ 0	$ 2,168	$ 675
Consumer | Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (in modification) | modification	0	0	1	1
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 100	$ 13
Post-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 100	$ 13
Consumer | Other consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (in modification) | modification	0	0	2	1
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 5	$ 38
Post-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 4	$ 37

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-Publisher FASB
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