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Note 5 - Loans - Allowance for Loan Losses by Portfolio Segment (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Balance | $ 136,157 | $ 166,538 |
Provision/(reversal) for loan losses | 12,913 | (11,210) |
Charge-offs | (5,490) | (20,054) |
Recoveries | 2,905 | 2,443 |
Net (Charge-offs)/Recoveries | (2,585) | (17,611) |
Balance | 146,485 | 136,157 | $ 166,538
Provision/(reversal) for credit losses | 14,543 | (16,008) | 57,500
Commitments to Extend Credit [Member] |  |  |
Balance | 7,100 | 11,898 |
Balance | 8,730 | 7,100 | 11,898
Provision/(reversal) for credit losses | 1,630 | (4,798) |
Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member] |  |  |
Balance |  | (1,560) |
Balance |  |  | (1,560)
Cumulative Effect, Period of Adoption, Adjusted Balance [Member] |  |  |
Balance |  | 164,978 |
Balance |  |  | 164,978
Commercial Portfolio Segment [Member] |  |  |
Balance | 43,394 | 68,742 |
Provision/(reversal) for loan losses | 6,798 | 24,463 |
Charge-offs | (3,222) | (20,051) |
Recoveries | 2,465 | 1,706 |
Net (Charge-offs)/Recoveries | (757) | (18,345) |
Balance | 49,435 | 43,394 | 68,742
Commercial Portfolio Segment [Member] | Commitments to Extend Credit [Member] |  |  |
Balance | 3,725 | 8,038 |
Balance | 4,840 | 3,725 | 8,038
Provision/(reversal) for credit losses | 1,115 | (4,313) |
Commercial Portfolio Segment [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member] |  |  |
Balance |  | (31,466) |
Balance |  |  | (31,466)
Commercial Portfolio Segment [Member] | Cumulative Effect, Period of Adoption, Adjusted Balance [Member] |  |  |
Balance |  | 37,276 |
Balance |  |  | 37,276
Real Estate Construction Portfolio Segment [Member] |  |  |
Balance | 6,302 | 30,854 |
Provision/(reversal) for loan losses | 4,109 | (321) |
Charge-offs | 0 | 0 |
Recoveries | 6 | 76 |
Net (Charge-offs)/Recoveries | 6 | 76 |
Balance | 10,417 | 6,302 | 30,854
Real Estate Construction Portfolio Segment [Member] | Commitments to Extend Credit [Member] |  |  |
Balance | 3,375 | 3,825 |
Balance | 3,890 | 3,375 | 3,825
Provision/(reversal) for credit losses | 515 | (450) |
Real Estate Construction Portfolio Segment [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member] |  |  |
Balance |  | (24,307) |
Balance |  |  | (24,307)
Real Estate Construction Portfolio Segment [Member] | Cumulative Effect, Period of Adoption, Adjusted Balance [Member] |  |  |
Balance |  | 6,547 |
Balance |  |  | 6,547
Commercial Real Estate Portfolio Segment [Member] |  |  |
Balance | 61,081 | 49,205 |
Provision/(reversal) for loan losses | 9,018 | (23,401) |
Charge-offs | (2,091) | 0 |
Recoveries | 358 | 284 |
Net (Charge-offs)/Recoveries | (1,733) | 284 |
Balance | 68,366 | 61,081 | 49,205
Commercial Real Estate Portfolio Segment [Member] | Commitments to Extend Credit [Member] |  |  |
Balance | 0 | 35 |
Balance | 0 | 0 | 35
Provision/(reversal) for credit losses | 0 | (35) |
Commercial Real Estate Portfolio Segment [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member] |  |  |
Balance |  | 34,993 |
Balance |  |  | 34,993
Commercial Real Estate Portfolio Segment [Member] | Cumulative Effect, Period of Adoption, Adjusted Balance [Member] |  |  |
Balance |  | 84,198 |
Balance |  |  | 84,198
Residential Mortgage and Equity Lines Portfolio Segment [Member] |  |  |
Balance | 25,379 | 17,737 |
Provision/(reversal) for loan losses | (7,219) | (11,943) |
Charge-offs | 0 | (3) |
Recoveries | 72 | 377 |
Net (Charge-offs)/Recoveries | 72 | 374 |
Balance | 18,232 | 25,379 | 17,737
Residential Mortgage and Equity Lines Portfolio Segment [Member] | Commitments to Extend Credit [Member] |  |  |
Balance | 0 | 0 |
Balance | 0 | 0 | 0
Provision/(reversal) for credit losses | 0 | 0 |
Residential Mortgage and Equity Lines Portfolio Segment [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member] |  |  |
Balance |  | 19,211 |
Balance |  |  | 19,211
Residential Mortgage and Equity Lines Portfolio Segment [Member] | Cumulative Effect, Period of Adoption, Adjusted Balance [Member] |  |  |
Balance |  | 36,948 |
Balance |  |  | 36,948
Installment and Other Loans [Member ] |  |  |
Balance | 1 | 0 |
Provision/(reversal) for loan losses | 207 | (8) |
Charge-offs | (177) | 0 |
Recoveries | 4 | (0) |
Net (Charge-offs)/Recoveries | (173) | 0 |
Balance | 35 | 1 | 0
Installment and Other Loans [Member ] | Commitments to Extend Credit [Member] |  |  |
Balance | 0 | 0 |
Balance | 0 | 0 | 0
Provision/(reversal) for credit losses | $ 0 | 0 |
Installment and Other Loans [Member ] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member] |  |  |
Balance |  | 9 |
Balance |  |  | 9
Installment and Other Loans [Member ] | Cumulative Effect, Period of Adoption, Adjusted Balance [Member] |  |  |
Balance |  | $ 9 |
Balance |  |  | $ 9

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- Definition Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(7)(2)) -URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(4)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (f) -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (a) -Subparagraph (3) Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (c) Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (a) -Subparagraph (1) + Details
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