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INVESTMENT SECURITIES - Narrative (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2023
USD ($)
security
Dec. 31, 2022
USD ($)
security
Dec. 31, 2023
USD ($)
security
Dec. 31, 2022
USD ($)
security
Debt Securities, Available-for-Sale [Line Items]        
Accrued interest receivable on debt securities $ 788 $ 1,100 $ 788 $ 1,100
Held-to-maturity debt securities pledged as collateral $ 53,616 $ 53,946 $ 53,616 $ 53,946
Number of available-for-sale debt securities in a gross unrealized loss position | security 76 88 76 88
Available-for-sale debt securities in a gross unrealized loss position $ 7,140 $ 9,307 $ 7,140 $ 9,307
Number of available-for-sale debt securities with total unrealized losses in a continual loss position for 12 months or longer | security 58 43 58 43
Unrealized losses in a continual loss position for 12 months or longer $ 6,661 $ 5,084 $ 6,661 $ 5,084
Net unrealized loss on available-for-sale debt securities 6,300 9,100    
Net unrealized loss on available-for-sale debt securities, net of tax 4,500 6,400 4,500 6,400
Debt securities available for sale $ 130,035 $ 112,580 $ 130,035 $ 112,580
Number of held-to-maturity debt securities | security 58 61 58 61
Debt securities held-to-maturity, unrealized loss position, fair value $ 48,300 $ 47,900 $ 48,300 $ 47,900
Unrealized losses on held-to-maturity debt securities 3,209 6,040 3,209 6,040
Provision for credit losses on held-to-maturity debt securities     0  
Provision for credit losses on available-for-sale debt securities     0  
Other-than-temporary unrealized losses   0   0
Federal Reserve Bank stock purchased     112  
FHLB stock purchased     1,400  
Standard & Poor's, AA Rating And Above        
Debt Securities, Available-for-Sale [Line Items]        
Debt securities available for sale 1,400   1,400  
Debt securities held-to-maturity 47,000   47,000  
Standard & Poor's, A+ Rating        
Debt Securities, Available-for-Sale [Line Items]        
Debt securities available for sale 810   810  
Standard & Poor's, AA- Rating        
Debt Securities, Available-for-Sale [Line Items]        
Debt securities held-to-maturity 3,400   3,400  
Taxable municipal        
Debt Securities, Available-for-Sale [Line Items]        
Held-to-maturity debt securities pledged as collateral 551 550 551 550
Available-for-sale debt securities in a gross unrealized loss position 107 211 107 211
Unrealized losses in a continual loss position for 12 months or longer 107 136 107 136
Debt securities available for sale 1,421 4,228 1,421 4,228
Unrealized losses on held-to-maturity debt securities 73 105 73 105
Tax exempt bank-qualified municipals        
Debt Securities, Available-for-Sale [Line Items]        
Held-to-maturity debt securities pledged as collateral 53,065 53,396 53,065 53,396
Available-for-sale debt securities in a gross unrealized loss position 21 313 21 313
Unrealized losses in a continual loss position for 12 months or longer 21 0 21 0
Debt securities available for sale 810 20,627 810 20,627
Unrealized losses on held-to-maturity debt securities 3,136 5,935 3,136 5,935
Other Bank Stock        
Debt Securities, Available-for-Sale [Line Items]        
Equity securities without readily determinable fair values 351 351 351 351
Impairment loss from change in fair value of other equity securities     0 0
Other Equity Investments        
Debt Securities, Available-for-Sale [Line Items]        
Equity securities without readily determinable fair values 7,000 4,600 7,000 4,600
Impairment loss from change in fair value of other equity securities     0 0
Net capital contributions made to equity investments     2,300 2,800
Limited Partnership        
Debt Securities, Available-for-Sale [Line Items]        
Affordable housing projects, estimated tax credits allocated     170  
Affordable housing projects, proportional amortization expense     126  
Affordable housing projects, aggregate funding commitment 2,000 2,000 2,000 2,000
Affordable housing projects, unfunded portion of commitment 1,500 1,900 1,500 1,900
Affordable housing projects, capital contributions     349 122
Affordable housing projects, loss recognized on changes in fair value     0 0
Collateralized Line of Credit | Federal Reserve Bank | Line of Credit        
Debt Securities, Available-for-Sale [Line Items]        
Collateralized line of credit 47,300   47,300  
Asset Pledged as Collateral | Federal Reserve Bank Advances        
Debt Securities, Available-for-Sale [Line Items]        
Held-to-maturity debt securities pledged as collateral $ 53,600 $ 0 $ 53,600 $ 0