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LOANS - Average Recorded Investment and Interest Income Recognized on Impaired Loans (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2018 | Mar. 31, 2017
Business Activities Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average Recorded Investment | $ 14,028 | $ 7,413
Cash Basis Interest Income Recognized | 0 | 62
Business Activities Loans | Commercial real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average Recorded Investment | 7,670 | 4,315
Cash Basis Interest Income Recognized | 0 | 34
Business Activities Loans | Commercial real estate | Construction and land development |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average recorded investment, with no related allowance | 589 | 0
Cash basis interest income recognized, with no related allowance | 0 | 0
Recorded investment, with related allowance | 0 | 0
Cash basis interest income recognized, with related allowance | 0 | 0
Business Activities Loans | Commercial real estate | Other commercial real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average recorded investment, with no related allowance | 5,937 | 2,592
Cash basis interest income recognized, with no related allowance | 0 | 34
Recorded investment, with related allowance | 1,144 | 1,723
Cash basis interest income recognized, with related allowance | 0 | 0
Business Activities Loans | Commercial and industrial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average Recorded Investment | 1,521 | 634
Cash Basis Interest Income Recognized | 0 | 5
Business Activities Loans | Commercial and industrial | Other Commercial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average recorded investment, with no related allowance | 1,334 | 226
Cash basis interest income recognized, with no related allowance | 0 | 3
Recorded investment, with related allowance | 187 | 216
Cash basis interest income recognized, with related allowance | 0 | 0
Business Activities Loans | Commercial and industrial | Agricultural |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average recorded investment, with no related allowance | 0 | 192
Cash basis interest income recognized, with no related allowance | 0 | 2
Recorded investment, with related allowance | 0 | 0
Cash basis interest income recognized, with related allowance | 0 | 0
Business Activities Loans | Commercial and industrial | Tax exempt |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average recorded investment, with no related allowance | 0 | 0
Cash basis interest income recognized, with no related allowance | 0 | 0
Recorded investment, with related allowance | 0 | 0
Cash basis interest income recognized, with related allowance | 0 | 0
Business Activities Loans | Residential real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average Recorded Investment | 4,393 | 1,821
Cash Basis Interest Income Recognized | 0 | 22
Business Activities Loans | Residential real estate | Residential mortgages |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average recorded investment, with no related allowance | 3,591 | 1,500
Cash basis interest income recognized, with no related allowance | 0 | 22
Recorded investment, with related allowance | 802 | 321
Cash basis interest income recognized, with related allowance | 0 | 0
Business Activities Loans | Consumer |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average Recorded Investment | 444 | 643
Cash Basis Interest Income Recognized | 0 | 1
Business Activities Loans | Consumer | Home equity |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average recorded investment, with no related allowance | 444 | 590
Cash basis interest income recognized, with no related allowance | 0 | 0
Recorded investment, with related allowance | 0 | 0
Cash basis interest income recognized, with related allowance | 0 | 0
Business Activities Loans | Consumer | Other consumer |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average recorded investment, with no related allowance | 0 | 44
Cash basis interest income recognized, with no related allowance | 0 | 1
Recorded investment, with related allowance | 0 | 9
Cash basis interest income recognized, with related allowance | 0 | 0
Acquired Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average Recorded Investment | 1,236 | 0
Cash Basis Interest Income Recognized | 1 | 0
Acquired Loans | Commercial real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average Recorded Investment | 133 | 0
Cash Basis Interest Income Recognized | 0 | 0
Acquired Loans | Commercial real estate | Construction and land development |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average recorded investment, with no related allowance | 0 | 0
Cash basis interest income recognized, with no related allowance | 0 | 0
Recorded investment, with related allowance | 0 | 0
Cash basis interest income recognized, with related allowance | 0 | 0
Acquired Loans | Commercial real estate | Other commercial real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average recorded investment, with no related allowance | 133 | 0
Cash basis interest income recognized, with no related allowance | 0 | 0
Recorded investment, with related allowance | 0 | 0
Cash basis interest income recognized, with related allowance | 0 | 0
Acquired Loans | Commercial and industrial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average Recorded Investment | 595 | 0
Cash Basis Interest Income Recognized | 1 | 0
Acquired Loans | Commercial and industrial | Other Commercial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average recorded investment, with no related allowance | 161 | 0
Cash basis interest income recognized, with no related allowance | 1 | 0
Recorded investment, with related allowance | 434 | 0
Cash basis interest income recognized, with related allowance | 0 | 0
Acquired Loans | Commercial and industrial | Agricultural |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average recorded investment, with no related allowance | 0 | 0
Cash basis interest income recognized, with no related allowance | 0 | 0
Recorded investment, with related allowance | 0 | 0
Cash basis interest income recognized, with related allowance | 0 | 0
Acquired Loans | Commercial and industrial | Tax exempt |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average recorded investment, with no related allowance | 0 | 0
Cash basis interest income recognized, with no related allowance | 0 | 0
Recorded investment, with related allowance | 0 | 0
Cash basis interest income recognized, with related allowance | 0 | 0
Acquired Loans | Residential real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average Recorded Investment | 508 | 0
Cash Basis Interest Income Recognized | 0 | 0
Acquired Loans | Residential real estate | Residential mortgages |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average recorded investment, with no related allowance | 508 | 0
Cash basis interest income recognized, with no related allowance | 0 | 0
Recorded investment, with related allowance | 0 | 0
Cash basis interest income recognized, with related allowance | 0 | 0
Acquired Loans | Consumer |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average Recorded Investment | 0 | 0
Cash Basis Interest Income Recognized | 0 | 0
Acquired Loans | Consumer | Home equity |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average recorded investment, with no related allowance | 0 | 0
Cash basis interest income recognized, with no related allowance | 0 | 0
Recorded investment, with related allowance | 0 | 0
Cash basis interest income recognized, with related allowance | 0 | 0
Acquired Loans | Consumer | Other consumer |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average recorded investment, with no related allowance | 0 | 0
Cash basis interest income recognized, with no related allowance | 0 | 0
Recorded investment, with related allowance | 0 | 0
Cash basis interest income recognized, with related allowance | $ 0 | $ 0

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