Note 19 - Financial Instruments With Off-balance-sheet Risk - (Details Textual) - USD ($)	Dec. 31, 2023	Dec. 31, 2022
Off-Balance-Sheet, Credit Loss, Liability	$ 3,324,000	$ 605,000
Unfunded Loan Commitment [Member]
Off-Balance-Sheet, Credit Loss, Liability	3,300,000	$ 605,000
Commitments to Extend Credit [Member]
Contractual Obligation	1,200,000,000
Standby and commercial Letters of Credit [Member]
Contractual Obligation	$ 45,200,000

Amount of expected credit loss for credit exposure on off-balance-sheet commitment, including but not limited to, loan commitment, standby letter of credit, financial guarantee not accounted for as insurance. Excludes off-balance sheet credit exposure accounted for as insurance and instrument accounted for under derivatives and hedging.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479344/326-20-45-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 460
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482454/460-10-45-1

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