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COMMITMENTS, OFF-BALANCE SHEET RISKS AND CONTINGENCIES - Commitments To Make Loans And Open Ended Revolving Lines Of Credit (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Commitments Off-Balance Sheet Risks and Contingencies [Line Items] |  |
Fixed Rate | $ 90,100 | $ 65,319
Variable Rate | 2,252,895 | 1,994,755
Total commercial loans |  |
Commitments Off-Balance Sheet Risks and Contingencies [Line Items] |  |
Fixed Rate | 79,792 | 52,568
Variable Rate | 1,850,719 | 1,646,539
Standby letters of credit |  |
Commitments Off-Balance Sheet Risks and Contingencies [Line Items] |  |
Fixed Rate | 0 | 0
Variable Rate | 55,336 | 53,796
Real estate mortgage loans |  |
Commitments Off-Balance Sheet Risks and Contingencies [Line Items] |  |
Fixed Rate | 7,906 | 11,984
Variable Rate | 14,216 | 3,921
Real estate construction mortgage loans |  |
Commitments Off-Balance Sheet Risks and Contingencies [Line Items] |  |
Fixed Rate | 2,402 | 767
Variable Rate | 3,213 | 3,051
Home equity mortgage open-ended revolving lines |  |
Commitments Off-Balance Sheet Risks and Contingencies [Line Items] |  |
Fixed Rate | 0 | 0
Variable Rate | 306,124 | 267,530
Total consumer loans |  |
Commitments Off-Balance Sheet Risks and Contingencies [Line Items] |  |
Fixed Rate | 0 | 0
Variable Rate | $ 23,287 | $ 19,918

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