Note 11 - Commitments and Contingent Liabilities - Total Contractual Amount for All Off-balance Sheet Commitments (Details)	Sep. 30, 2022 USD ($)
Standby Letters of Credit [Member]
Commitments	$ 79,404,000
Commitments to Extend Credit [Member]
Commitments	$ 1,274,381,000

The face amount of financial liabilities, which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition.

No definition available.

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