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Note 5 - Loans and ACL for Loans - Allowance for Loan Losses by Portfolio Segment and Based on Impairment Evaluation Method (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Beginning balance $ 73,531 $ 53,898 $ 51,920
Provision for credit losses 12,471 9,682 1,397
Charge-offs (7,512) (2,307) (7,681)
Recoveries (884) (2,308) (1,505)
Ending balance 79,374 73,531 53,898
Initial Allowance on PCD Loans   9,950 6,757
Charge-offs (7,512) (2,307) (7,681)
Recoveries 884 2,308 1,505
Loans, individually evaluated for impairment 30,842 27,706  
Allowance for loans, individually evaluated for impairment 3,833 5,822  
Real Estate [Member]      
Loans, individually evaluated for impairment 26,318 22,459  
Accounts Receivable and Equipment [Member]      
Loans, individually evaluated for impairment 4,189 5,028  
Other Collateral [Member]      
Loans, individually evaluated for impairment 335 219  
Home Equity Line of Credit [Member]      
Beginning balance 1,613 1,044 895
Provision for credit losses 59 567 1
Charge-offs (12) 0 0
Recoveries 0 0 (1)
Ending balance 1,660 1,613 1,044
Initial Allowance on PCD Loans   2 147
Charge-offs (12) 0 0
Recoveries 0 0 1
Loans, individually evaluated for impairment 467 205  
Allowance for loans, individually evaluated for impairment 0 0  
Home Equity Line of Credit [Member] | Real Estate [Member]      
Loans, individually evaluated for impairment 467 205  
Home Equity Line of Credit [Member] | Accounts Receivable and Equipment [Member]      
Loans, individually evaluated for impairment 0 0  
Home Equity Line of Credit [Member] | Other Collateral [Member]      
Loans, individually evaluated for impairment 0 0  
Commercial Real Estate Portfolio Segment [Member]      
Beginning balance 33,468 25,555 26,379
Provision for credit losses 232 2,112 (205)
Charge-offs 0 (78) (4,974)
Recoveries (100) (250) (752)
Ending balance 33,800 33,468 25,555
Initial Allowance on PCD Loans   5,629 3,603
Charge-offs 0 (78) (4,974)
Recoveries 100 250 752
Loans, individually evaluated for impairment 18,005 19,179  
Allowance for loans, individually evaluated for impairment 2,416 3,498  
Commercial Real Estate Portfolio Segment [Member] | Real Estate [Member]      
Loans, individually evaluated for impairment 18,005 19,179  
Commercial Real Estate Portfolio Segment [Member] | Accounts Receivable and Equipment [Member]      
Loans, individually evaluated for impairment 0 0  
Commercial Real Estate Portfolio Segment [Member] | Other Collateral [Member]      
Loans, individually evaluated for impairment 0 0  
Commercial Real Estate Portfolio Segment [Member] | Non-owner Occupied [Member]      
Beginning balance 22,641 15,960 19,396
Provision for credit losses (599) 3,173 (2,031)
Charge-offs 0 (37) (3,065)
Recoveries (91) (37) (169)
Ending balance 22,133 22,641 15,960
Initial Allowance on PCD Loans   3,508 1,491
Charge-offs 0 (37) (3,065)
Recoveries 91 37 169
Loans, individually evaluated for impairment 15,419 14,764  
Allowance for loans, individually evaluated for impairment 1,604 2,652  
Commercial Real Estate Portfolio Segment [Member] | Non-owner Occupied [Member] | Real Estate [Member]      
Loans, individually evaluated for impairment 15,419 14,764  
Commercial Real Estate Portfolio Segment [Member] | Non-owner Occupied [Member] | Accounts Receivable and Equipment [Member]      
Loans, individually evaluated for impairment 0 0  
Commercial Real Estate Portfolio Segment [Member] | Non-owner Occupied [Member] | Other Collateral [Member]      
Loans, individually evaluated for impairment 0 0  
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied [Member]      
Beginning balance 10,827 9,595 6,983
Provision for credit losses 831 (1,061) 1,826
Charge-offs 0 (41) (1,909)
Recoveries (9) (213) (583)
Ending balance 11,667 10,827 9,595
Initial Allowance on PCD Loans   2,121 2,112
Charge-offs 0 (41) (1,909)
Recoveries 9 213 583
Loans, individually evaluated for impairment 2,586 4,415  
Allowance for loans, individually evaluated for impairment 812 846  
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied [Member] | Real Estate [Member]      
Loans, individually evaluated for impairment 2,586 4,415  
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied [Member] | Accounts Receivable and Equipment [Member]      
Loans, individually evaluated for impairment 0 0  
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied [Member] | Other Collateral [Member]      
Loans, individually evaluated for impairment 0 0  
Commercial and Industrial Portfolio Segment [Member]      
Loans, individually evaluated for impairment 7,272 5,489  
Allowance for loans, individually evaluated for impairment 1,085 1,966  
Commercial and Industrial Portfolio Segment [Member] | Real Estate [Member]      
Loans, individually evaluated for impairment 3,083 461  
Commercial and Industrial Portfolio Segment [Member] | Accounts Receivable and Equipment [Member]      
Loans, individually evaluated for impairment 4,189 5,028  
Commercial and Industrial Portfolio Segment [Member] | Other Collateral [Member]      
Loans, individually evaluated for impairment 0 0  
Commercial and Industrial Portfolio Segment [Member] | Term [Member]      
Beginning balance 12,991 8,577 8,970
Provision for credit losses 3,607 2,497 (112)
Charge-offs (2,298) (724) (1,337)
Recoveries (59) (1,283) (34)
Ending balance 14,359 12,991 8,577
Initial Allowance on PCD Loans   1,358 1,022
Charge-offs (2,298) (724) (1,337)
Recoveries 59 1,283 34
Loans, individually evaluated for impairment 4,390 2,246  
Allowance for loans, individually evaluated for impairment 377 1,205  
Commercial and Industrial Portfolio Segment [Member] | Term [Member] | Real Estate [Member]      
Loans, individually evaluated for impairment 302 39  
Commercial and Industrial Portfolio Segment [Member] | Term [Member] | Accounts Receivable and Equipment [Member]      
Loans, individually evaluated for impairment 4,088 2,207  
Commercial and Industrial Portfolio Segment [Member] | Term [Member] | Other Collateral [Member]      
Loans, individually evaluated for impairment 0 0  
Commercial and Industrial Portfolio Segment [Member] | Lines of Credit [Member]      
Beginning balance 6,389 4,802 3,614
Provision for credit losses 3,582 (87) (567)
Charge-offs (3,633) (200) 0
Recoveries (157) 0 0
Ending balance 6,495 6,389 4,802
Initial Allowance on PCD Loans   1,874 1,755
Charge-offs (3,633) (200) 0
Recoveries 157 0 0
Loans, individually evaluated for impairment 2,882 3,243  
Allowance for loans, individually evaluated for impairment 708 761  
Commercial and Industrial Portfolio Segment [Member] | Lines of Credit [Member] | Real Estate [Member]      
Loans, individually evaluated for impairment 2,781 422  
Commercial and Industrial Portfolio Segment [Member] | Lines of Credit [Member] | Accounts Receivable and Equipment [Member]      
Loans, individually evaluated for impairment 101 2,821  
Commercial and Industrial Portfolio Segment [Member] | Lines of Credit [Member] | Other Collateral [Member]      
Loans, individually evaluated for impairment 0 0  
Total Commercial and Industrial Portfolio Segment [Member]      
Beginning balance 19,380 13,379 12,584
Provision for credit losses 7,189 2,410 (679)
Charge-offs (5,931) (924) (1,337)
Recoveries (216) (1,283) (34)
Ending balance 20,854 19,380 13,379
Initial Allowance on PCD Loans   3,232 2,777
Charge-offs (5,931) (924) (1,337)
Recoveries 216 1,283 34
Residential Real Estate Portfolio Segment [Member]      
Beginning balance 10,314 7,993 5,207
Provision for credit losses 3,280 1,702 2,900
Charge-offs (43) (57) (383)
Recoveries (47) (86) (39)
Ending balance 13,598 10,314 7,993
Initial Allowance on PCD Loans   590 230
Charge-offs (43) (57) (383)
Recoveries 47 86 39
Loans, individually evaluated for impairment 4,763 2,614  
Allowance for loans, individually evaluated for impairment 314 338  
Residential Real Estate Portfolio Segment [Member] | Real Estate [Member]      
Loans, individually evaluated for impairment 4,763 2,614  
Residential Real Estate Portfolio Segment [Member] | Accounts Receivable and Equipment [Member]      
Loans, individually evaluated for impairment 0 0  
Residential Real Estate Portfolio Segment [Member] | Other Collateral [Member]      
Loans, individually evaluated for impairment 0 0  
Residential Real Estate Portfolio Segment [Member] | Non-owner Occupied [Member]      
Beginning balance 3,597 3,677 1,818
Provision for credit losses 683 (75) 1,766
Charge-offs 0 (27) 0
Recoveries (2) (22) (5)
Ending balance 4,282 3,597 3,677
Initial Allowance on PCD Loans   0 88
Charge-offs 0 (27) 0
Recoveries 2 22 5
Loans, individually evaluated for impairment 558 415  
Allowance for loans, individually evaluated for impairment 116 116  
Residential Real Estate Portfolio Segment [Member] | Non-owner Occupied [Member] | Real Estate [Member]      
Loans, individually evaluated for impairment 558 415  
Residential Real Estate Portfolio Segment [Member] | Non-owner Occupied [Member] | Accounts Receivable and Equipment [Member]      
Loans, individually evaluated for impairment 0 0  
Residential Real Estate Portfolio Segment [Member] | Non-owner Occupied [Member] | Other Collateral [Member]      
Loans, individually evaluated for impairment 0 0  
Residential Real Estate Portfolio Segment [Member] | Owner Occupied [Member]      
Beginning balance 6,717 4,316 3,389
Provision for credit losses 2,597 1,777 1,134
Charge-offs (43) (30) (383)
Recoveries (45) (64) (34)
Ending balance 9,316 6,717 4,316
Initial Allowance on PCD Loans   590 142
Charge-offs (43) (30) (383)
Recoveries 45 64 34
Loans, individually evaluated for impairment 4,205 2,199  
Allowance for loans, individually evaluated for impairment 198 222  
Residential Real Estate Portfolio Segment [Member] | Owner Occupied [Member] | Real Estate [Member]      
Loans, individually evaluated for impairment 4,205 2,199  
Residential Real Estate Portfolio Segment [Member] | Owner Occupied [Member] | Accounts Receivable and Equipment [Member]      
Loans, individually evaluated for impairment 0 0  
Residential Real Estate Portfolio Segment [Member] | Owner Occupied [Member] | Other Collateral [Member]      
Loans, individually evaluated for impairment 0 0  
Construction and Development [Member]      
Beginning balance 7,186 4,789 6,119
Provision for credit losses 407 2,050 (1,333)
Charge-offs 0 (72) 0
Recoveries 0 0 (3)
Ending balance 7,593 7,186 4,789
Initial Allowance on PCD Loans   419 0
Charge-offs 0 (72) 0
Recoveries 0 0 3
Loans, individually evaluated for impairment 0 0  
Allowance for loans, individually evaluated for impairment 0 0  
Construction and Development [Member] | Real Estate [Member]      
Loans, individually evaluated for impairment 0 0  
Construction and Development [Member] | Accounts Receivable and Equipment [Member]      
Loans, individually evaluated for impairment 0 0  
Construction and Development [Member] | Other Collateral [Member]      
Loans, individually evaluated for impairment 0 0  
Consumer Portfolio Segment [Member]      
Beginning balance 1,158 772 340
Provision for credit losses 628 750 743
Charge-offs (865) (1,080) (987)
Recoveries (486) (638) (676)
Ending balance 1,407 1,158 772
Initial Allowance on PCD Loans   78 0
Charge-offs (865) (1,080) (987)
Recoveries 486 638 676
Loans, individually evaluated for impairment 335 219  
Allowance for loans, individually evaluated for impairment 18 20  
Consumer Portfolio Segment [Member] | Real Estate [Member]      
Loans, individually evaluated for impairment 0 0  
Consumer Portfolio Segment [Member] | Accounts Receivable and Equipment [Member]      
Loans, individually evaluated for impairment 0 0  
Consumer Portfolio Segment [Member] | Other Collateral [Member]      
Loans, individually evaluated for impairment 335 219  
Finance Leases Portfolio Segment [Member]      
Beginning balance 201 204 261
Provision for credit losses 19 (3) (57)
Charge-offs 0 0 0
Recoveries 0 0 0
Ending balance 220 201 204
Initial Allowance on PCD Loans   0 0
Charge-offs 0 0 0
Recoveries 0 0 0
Loans, individually evaluated for impairment 0 0  
Allowance for loans, individually evaluated for impairment 0 0  
Finance Leases Portfolio Segment [Member] | Real Estate [Member]      
Loans, individually evaluated for impairment 0 0  
Finance Leases Portfolio Segment [Member] | Accounts Receivable and Equipment [Member]      
Loans, individually evaluated for impairment 0 0  
Finance Leases Portfolio Segment [Member] | Other Collateral [Member]      
Loans, individually evaluated for impairment 0 0  
Commercial Portfolio Segment [Member] | Credit Card Receivable [Member]      
Beginning balance 211 162 135
Provision for credit losses 657 94 27
Charge-offs (661) (96) 0
Recoveries (35) (51) 0
Ending balance 242 211 162
Initial Allowance on PCD Loans   0 0
Charge-offs (661) (96) 0
Recoveries 35 51 $ 0
Loans, individually evaluated for impairment 0 0  
Allowance for loans, individually evaluated for impairment 0 0  
Commercial Portfolio Segment [Member] | Credit Card Receivable [Member] | Real Estate [Member]      
Loans, individually evaluated for impairment 0 0  
Commercial Portfolio Segment [Member] | Credit Card Receivable [Member] | Accounts Receivable and Equipment [Member]      
Loans, individually evaluated for impairment 0 0  
Commercial Portfolio Segment [Member] | Credit Card Receivable [Member] | Other Collateral [Member]      
Loans, individually evaluated for impairment $ 0 $ 0