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LOANS - Summary of Total Loans (Details) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 USD ($) item | Dec. 31, 2019 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | $ 2,562,885 | $ 2,634,593
Business Activities Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 1,964,754 | 1,828,731
Acquired Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 598,131 | 805,862
Total commercial loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 1,525,450 | 1,353,952
Total commercial loans | Business Activities Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 1,266,348 | 1,024,008
Total commercial loans | Acquired Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 259,102 | 329,944
Total commercial real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 1,084,381 | 930,661
Total commercial real estate | Business Activities Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 895,117 | 697,438
Total commercial real estate | Acquired Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 189,264 | 233,223
Total commercial real estate | Construction and land development |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 131,123 | 34,290
Total commercial real estate | Construction and land development | Business Activities Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 129,255 | 31,387
Total commercial real estate | Construction and land development | Acquired Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 1,868 | 2,903
Total commercial real estate | Other commercial real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 953,258 | 896,371
Total commercial real estate | Other commercial real estate | Business Activities Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 765,862 | 666,051
Total commercial real estate | Other commercial real estate | Acquired Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 187,396 | 230,320
Total commercial and industrial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 441,069 | 423,291
Total commercial and industrial | Business Activities Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 371,231 | 326,570
Total commercial and industrial | Acquired Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 69,838 | 96,721
Total commercial and industrial | Commercial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 360,688 | 298,764
Total commercial and industrial | Commercial | Business Activities Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 315,005 | 239,692
Total commercial and industrial | Commercial | Acquired Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 45,683 | 59,072
Total commercial and industrial | Agricultural |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 16,950 | 20,224
Total commercial and industrial | Agricultural | Business Activities Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 16,797 | 20,018
Total commercial and industrial | Agricultural | Acquired Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 153 | 206
Total commercial and industrial | Tax exempt |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 63,431 | 104,303
Total commercial and industrial | Tax exempt | Business Activities Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 39,429 | 66,860
Total commercial and industrial | Tax exempt | Acquired Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 24,002 | 37,443
Total residential real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | $ 923,891 | 1,145,358
Total residential real estate | Maximum |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Number of families | item | 4 |
Total residential real estate | Minimum |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Number of families | item | 1 |
Total residential real estate | Business Activities Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | $ 633,390 | 734,188
Total residential real estate | Acquired Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 290,501 | 411,170
Total residential real estate | Residential mortgages |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 923,891 | 1,145,358
Total residential real estate | Residential mortgages | Business Activities Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 633,390 | 734,188
Total residential real estate | Residential mortgages | Acquired Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 290,501 | 411,170
Total consumer |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 113,544 | 135,283
Total consumer | Business Activities Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 65,016 | 70,535
Total consumer | Acquired Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 48,528 | 64,748
Total consumer | Home equity |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 102,464 | 122,401
Total consumer | Home equity | Business Activities Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 55,092 | 59,368
Total consumer | Home equity | Acquired Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 47,372 | 63,033
Total consumer | Other consumer |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 11,080 | 12,882
Total consumer | Other consumer | Business Activities Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | 9,924 | 11,167
Total consumer | Other consumer | Acquired Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total loans | $ 1,156 | $ 1,715

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