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Note 4 - Loans Receivable and Allowance for Credit Losses on Loans - Schedule of Allowance for Credit Losses by Category (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2023
Beginning balance | $ 31,534 | $ 27,992 | $ 27,992
Provision for credit losses on loans | 1,421 | 2,355 |
Charge-offs | (1,894) | (720) | (3,476)
Recoveries | 418 | 310 |
Net charge-offs | (1,476) | (410) |
Total ending ACL balance | 31,479 | 29,937 | 31,534
Real Estate Portfolio Segment [Member] |  |  |
Beginning balance | 14,107 | 12,123 | 12,123
Provision for credit losses on loans | 146 | 459 |
Charge-offs | 0 | (10) |
Recoveries | 0 | 0 |
Net charge-offs | 0 | (10) |
Total ending ACL balance | 14,253 | 12,572 | 14,107
Consumer Portfolio Segment [Member] |  |  |
Beginning balance | 13,357 | 12,109 | 12,109
Provision for credit losses on loans | 644 | 1,691 |
Charge-offs | (1,486) | (709) |
Recoveries | 418 | 310 |
Net charge-offs | (1,068) | (399) |
Total ending ACL balance | 12,933 | 13,401 | 13,357
Commercial Business Portfolio Segment [Member] |  |  |
Beginning balance | 4,070 | 3,760 | 3,760
Provision for credit losses on loans | 631 | 205 |
Charge-offs | (408) | (1) |
Recoveries | 0 | 0 |
Net charge-offs | (408) | (1) |
Total ending ACL balance | 4,293 | 3,964 | 4,070
Unallocated Financing Receivables [Member] |  |  |
Beginning balance | 0 | 0 | 0
Provision for credit losses on loans | 0 | 0 |
Charge-offs | 0 | 0 |
Recoveries | 0 | 0 |
Net charge-offs | 0 | 0 |
Total ending ACL balance | $ 0 | $ 0 | $ 0

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- Definition Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479344/326-20-45-1 + Details
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- Definition Amount, excluding accrued interest, of increase in allowance for credit loss on financing receivable from recovery. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 + Details
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- Definition Amount, excluding accrued interest, of decrease in allowance for credit loss on financing receivable from writeoff. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 + Details
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- Definition Amount, excluding accrued interest, of decrease (increase) in allowance for credit loss on financing receivable from writeoff (recovery). Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 + Details
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- Definition Amount, excluding accrued interest, of credit loss expense (reversal of expense) on financing receivable. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 + Details
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