Note 8 - Commitments and Contingent Liabilities - Outstanding Commitments and Contingent Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Commitments	$ 481,678	$ 424,836
Commitments to Extend Credit [Member]
Commitments	480,950	418,952
Financial Standby Letter of Credit [Member]
Commitments	$ 728	$ 5,884

Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions.

No definition available.

Name:	us-gaap_OtherCommitment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant