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LOANS AND ALLOWANCE FOR CREDIT LOSSES - Summary of Total Loans (Details) $ in Thousands | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Mar. 31, 2022 USD ($) loan | Dec. 31, 2021 USD ($) loan | Mar. 31, 2021 USD ($) | Dec. 31, 2020 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total loans | $ 2,654,562 | $ 2,531,910 |  |
Allowance for credit losses | 23,190 | 22,718 | $ 23,653 | $ 19,082
Net loans | 2,631,372 | 2,509,192 |  |
Accrued interest receivable for loans | 8,700 | 6,300 |  |
Tax exempt |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total loans | 38,634 | 41,280 |  |
Allowance for credit losses |  | 86 | 94 | 58
Net loans | 38,634 | 41,280 |  |
Home equity |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total loans | 84,217 | 86,657 |  |
Allowance for credit losses | $ 827 | $ 814 | 823 | 285
Paycheck Protection Program [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Number of loans outstanding | loan | 9 | 61 |  |
Outstanding principal balance | $ 1,100 | $ 6,700 |  |
Total commercial loans | Construction and land development |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total loans | 80,264 | 56,263 |  |
Allowance for credit losses | 1,001 | 2,111 | 1,792 | 824
Net loans | 80,264 | 56,263 |  |
Total commercial real estate | Commercial real estate owner occupied |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total loans | 249,460 | 257,122 |  |
Allowance for credit losses | 2,673 | 2,751 | 3,352 | 1,783
Net loans | 249,460 | 257,122 |  |
Total commercial real estate | Commercial real estate non-owner occupied |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total loans | 966,739 | 887,092 |  |
Allowance for credit losses | 7,007 | 5,650 | 5,902 | 7,864
Net loans | 966,739 | 887,092 |  |
Total commercial and industrial | Commercial and industrial |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total loans | 293,816 | 307,112 |  |
Allowance for credit losses | 4,739 | 5,369 | 5,040 | 3,137
Net loans | 293,816 | 307,112 |  |
Total residential real estate | Residential mortgages |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total loans | 933,559 | 888,263 |  |
Allowance for credit losses | 6,878 | 5,862 | 6,569 | 5,010
Total consumer | Other consumer |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total loans | 7,873 | 8,121 |  |
Allowance for credit losses | $ 65 | $ 75 | $ 81 | $ 121

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