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LOANS - Average Recorded Investment and Interest Income Recognized on Impaired Loans (Details) - USD ($) $ in Thousands | 6 Months Ended
--- | ---
Jun. 30, 2019 | Jun. 30, 2018
Business Activities Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average Recorded Investment | $ 27,199 | $ 40,790
Cash Basis Interest Income Recognized | 657 | 720
Acquired Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average Recorded Investment | 5,230 | 8,641
Cash Basis Interest Income Recognized | 171 | 258
Commercial real estate | Business Activities Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average Recorded Investment | 21,446 | 30,878
Cash Basis Interest Income Recognized | 225 | 373
Commercial real estate | Acquired Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average Recorded Investment | 3,572 | 5,326
Cash Basis Interest Income Recognized | 115 | 200
Commercial real estate | Other | Business Activities Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average recorded investment, with no related allowance | 20,877 | 29,092
Cash basis interest income recognized, with no related allowance | 213 | 326
Average recorded investment with related allowance | 569 | 1,786
Cash basis interest income recognized, with related allowance | 12 | 47
Commercial real estate | Other | Acquired Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average recorded investment, with no related allowance | 2,607 | 2,306
Cash basis interest income recognized, with no related allowance | 82 | 111
Average recorded investment with related allowance | 965 | 3,020
Cash basis interest income recognized, with related allowance | 33 | 89
Commercial and industrial loans | Business Activities Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average recorded investment, with no related allowance | 1,775 | 4,467
Cash basis interest income recognized, with no related allowance | 304 | 201
Average recorded investment with related allowance | 1,468 | 1,279
Cash basis interest income recognized, with related allowance | 64 | 83
Average Recorded Investment | 3,243 | 5,746
Cash Basis Interest Income Recognized | 368 | 284
Commercial and industrial loans | Acquired Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average recorded investment, with no related allowance | 522 | 349
Cash basis interest income recognized, with no related allowance | 32 | 27
Average recorded investment with related allowance | 30 | 287
Cash basis interest income recognized, with related allowance | 1 | 17
Average Recorded Investment | 552 | 636
Cash Basis Interest Income Recognized | 33 | 44
Residential mortgages | Business Activities Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average Recorded Investment | 2,207 | 2,351
Cash Basis Interest Income Recognized | 60 | 58
Residential mortgages | Acquired Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average Recorded Investment | 452 | 1,582
Cash Basis Interest Income Recognized | 16 | 8
Residential mortgages | 1-4 Family | Business Activities Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average recorded investment, with no related allowance | 574 | 942
Cash basis interest income recognized, with no related allowance | 23 | 26
Average recorded investment with related allowance | 1,633 | 1,409
Cash basis interest income recognized, with related allowance | 37 | 32
Residential mortgages | 1-4 Family | Acquired Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average recorded investment, with no related allowance | 362 | 1,505
Cash basis interest income recognized, with no related allowance | 12 | 6
Average recorded investment with related allowance | 90 | 77
Cash basis interest income recognized, with related allowance | 4 | 2
Consumer | Business Activities Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average Recorded Investment | 303 | 1,815
Cash Basis Interest Income Recognized | 4 | 5
Consumer | Acquired Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average Recorded Investment | 654 | 1,097
Cash Basis Interest Income Recognized | 7 | 6
Consumer | Other | Business Activities Loans |  |
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
Average recorded investment with related allowance | 12 | 16
Cash basis interest income recognized, with related allowance | 0 | 0
Consumer | Other | Acquired Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average recorded investment, with no related allowance | 5 | 17
Cash basis interest income recognized, with no related allowance | 0 | 1
Average recorded investment with related allowance | 42 | 0
Cash basis interest income recognized, with related allowance | 1 | 0
Consumer | Home equity | Business Activities Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average recorded investment, with no related allowance | 196 | 1,754
Cash basis interest income recognized, with no related allowance | 1 | 4
Average recorded investment with related allowance | 95 | 45
Cash basis interest income recognized, with related allowance | 3 | 1
Consumer | Home equity | Acquired Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average recorded investment, with no related allowance | 557 | 760
Cash basis interest income recognized, with no related allowance | 5 | 0
Average recorded investment with related allowance | 50 | 320
Cash basis interest income recognized, with related allowance | $ 1 | $ 5

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