Note 5 - Fair Value Measurements (Details Textual) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Financing Receivable, before Allowance for Credit Loss	$ 863,548	$ 856,646
Collateral Pledged [Member]
Financing Receivable, before Allowance for Credit Loss	2,277	2,184
Commercial Real Estate Portfolio Segment [Member] \| Collateral Pledged [Member]
Financing Receivable, before Allowance for Credit Loss	2,156
Closed End First Liens [Member] \| Consumer Real Estate Portfolio Segment [Member] \| Collateral Pledged [Member]
Financing Receivable, before Allowance for Credit Loss	$ 121	$ 7

Amortized cost, before allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease.

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+ Details