Note 5 - Loans and Allowance for Credit Losses (Details Textual) - USD ($) |
3 Months Ended | 6 Months Ended | |||||||
|---|---|---|---|---|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Mar. 31, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
Dec. 31, 2025 |
Dec. 31, 2024 |
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| Financing Receivable, Unamortized Loan Cost (Fee) and Purchase Premium (Discount) | $ 17,000,000 | $ 17,000,000 | $ 100,000 | ||||||
| Financing Receivable, Deferred Commitment Fee | 1,500,000 | 1,500,000 | 1,600,000 | ||||||
| Loan Participations and Whole Loans Sold to and Serviced for Others Not on Balance Sheet | 47,300,000 | 47,300,000 | 44,700,000 | ||||||
| Loan Participations and Whole Loans Sold to and Serviced For Others Unpaid Principal Balance | 237,800,000 | 237,800,000 | 239,200,000 | ||||||
| Financing Receivable, before Allowance for Credit Loss | 33,800,000 | 33,800,000 | |||||||
| Financing Receivable, Accrued Interest, after Allowance for Credit Loss | 16,200,000 | 16,200,000 | $ 12,100,000 | ||||||
| Provision for Loan, Lease, and Other Losses | 275,000 | $ 141,000 | (1,833,000) | $ (3,455,000) | |||||
| Financing Receivable, Excluding Accrued Interest, Credit Loss Expense (Reversal) | [1] | 374,000 | 172,000 | (1,428,000) | (3,523,000) | ||||
| Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery | $ 121,000 | 144,000 | $ 224,000 | 3,680,000 | |||||
| Financing Receivable, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration] | Interest Receivable | Interest Receivable | Interest Receivable | ||||||
| Unfunded Loan Commitment [Member] | |||||||||
| Financing Receivable, Excluding Accrued Interest, Credit Loss Expense (Reversal) | $ (100,000) | $ (31,000) | $ (400,000) | $ 68,000 | |||||
| Property Insurance Settlement [Member] | |||||||||
| Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery | $ 3,300,000 | ||||||||
| Related Party [Member] | |||||||||
| Financing Receivable, before Allowance for Credit Loss | 33,828,000 | 33,828,000 | $ 34,749,000 | $ 43,647,000 | |||||
| Related Party [Member] | Nonperforming Financial Instruments [Member] | |||||||||
| Financing Receivable, before Allowance for Credit Loss | $ 0 | $ 0 | $ 0 | ||||||
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