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LOANS - Total Loans Outstanding (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Mar. 31, 2022 | Dec. 31, 2021 | Mar. 31, 2021 | Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Loans receivable before allowance for credit loss | $ 4,356,471 | $ 4,291,105 |  |
Percentage of loans receivable | 100.00% | 100.00% |  |
Less: Allowance for credit losses | $ (67,526) | $ (67,773) | $ (71,844) | $ (61,408)
Net deferred loan fees | (2,757) | (3,264) |  |
Loans, net | 4,286,188 | 4,220,068 |  |
Total commercial loans | Commercial Portfolio Segment |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Loans receivable before allowance for credit loss | $ 3,922,910 | $ 3,863,630 |  |
Percentage of loans receivable | 90.10% | 90.10% |  |
Total consumer loans |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Loans receivable before allowance for credit loss | $ 433,561 | $ 427,475 |  |
Percentage of loans receivable | 9.90% | 9.90% |  |
Other consumer loans |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Loans receivable before allowance for credit loss | $ 83,395 | $ 82,755 |  |
Percentage of loans receivable | 1.90% | 1.90% |  |
Commercial and industrial loans: |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Loans receivable before allowance for credit loss | $ 1,463,457 | $ 1,389,469 |  |
Percentage of loans receivable | 33.60% | 32.40% |  |
Commercial and industrial loans: | Commercial Portfolio Segment |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Less: Allowance for credit losses | $ (31,322) | $ (30,595) | (32,052) | (28,333)
Commercial and industrial loans: | Working capital lines of credit loans | Commercial Portfolio Segment |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Loans receivable before allowance for credit loss | $ 678,567 | $ 652,861 |  |
Percentage of loans receivable | 15.60% | 15.20% |  |
Commercial and industrial loans: | Non-working capital loans | Commercial Portfolio Segment |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Loans receivable before allowance for credit loss | $ 784,890 | $ 736,608 |  |
Percentage of loans receivable | 18.00% | 17.20% |  |
Commercial real estate and multi-family residential loans: |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Loans receivable before allowance for credit loss | $ 1,957,372 | $ 1,954,846 |  |
Percentage of loans receivable | 44.90% | 45.60% |  |
Commercial real estate and multi-family residential loans: | Construction and land development loans |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Loans receivable before allowance for credit loss | $ 399,618 | $ 379,813 |  |
Percentage of loans receivable | 9.20% | 8.90% |  |
Commercial real estate and multi-family residential loans: | Owner occupied loans |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Loans receivable before allowance for credit loss | $ 724,588 | $ 739,371 |  |
Percentage of loans receivable | 16.60% | 17.20% |  |
Commercial real estate and multi-family residential loans: | Nonowner occupied loans |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Loans receivable before allowance for credit loss | $ 619,163 | $ 588,458 |  |
Percentage of loans receivable | 14.20% | 13.70% |  |
Commercial real estate and multi-family residential loans: | Multifamily loans |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Loans receivable before allowance for credit loss | $ 214,003 | $ 247,204 |  |
Percentage of loans receivable | 4.90% | 5.80% |  |
Agri-business and agricultural loans: |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Loans receivable before allowance for credit loss | $ 423,669 | $ 445,825 |  |
Percentage of loans receivable | 9.80% | 10.40% |  |
Agri-business and agricultural loans: | Commercial Portfolio Segment |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Less: Allowance for credit losses | $ (4,761) | $ (5,034) | $ (3,901) | $ (3,043)
Agri-business and agricultural loans: | Loans secured by farmland | Commercial Portfolio Segment |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Loans receivable before allowance for credit loss | $ 164,252 | $ 206,331 |  |
Percentage of loans receivable | 3.80% | 4.80% |  |
Agri-business and agricultural loans: | Loans for agricultural production | Commercial Portfolio Segment |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Loans receivable before allowance for credit loss | $ 259,417 | $ 239,494 |  |
Percentage of loans receivable | 6.00% | 5.60% |  |
Other commercial loans |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Loans receivable before allowance for credit loss | $ 78,412 | $ 73,490 |  |
Percentage of loans receivable | 1.80% | 1.70% |  |
Consumer 1-4 family mortgage loans: |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Loans receivable before allowance for credit loss | $ 350,166 | $ 344,720 |  |
Percentage of loans receivable | 8.00% | 8.00% |  |
Consumer 1-4 family mortgage loans: | Closed end first mortgage loans |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Loans receivable before allowance for credit loss | $ 180,448 | $ 176,561 |  |
Percentage of loans receivable | 4.10% | 4.10% |  |
Consumer 1-4 family mortgage loans: | Open end and junior lien loans |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Loans receivable before allowance for credit loss | $ 158,583 | $ 156,238 |  |
Percentage of loans receivable | 3.60% | 3.60% |  |
Consumer 1-4 family mortgage loans: | Residential construction and land development loans |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Loans receivable before allowance for credit loss | $ 11,135 | $ 11,921 |  |
Percentage of loans receivable | 0.30% | 0.30% |  |

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