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FAIR VALUE - Level 3 Fair Value Measurement Activity (Details) - Level 3 - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Interest rate lock commitments on residential mortgages    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Balance, beginning of period $ 35 $ 353
Total gains (losses) included in earnings 22 (53)
Balance, end of period 57 300
Collateralized Mortgage Obligations    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Balance, beginning of period 27,193 23,147
Unrealized gains (losses) included in OCI 220 (1,360)
Purchases 871 0
Net discount accretion 13 71
Principal payments and other (107) 0
Sales 0 (3,053)
OTTI 0 (171)
Balance, end of period $ 28,190 $ 18,634