Note 10 - Commitments and Contingencies (Details Textual)	6 Months Ended
	Jun. 30, 2024 USD ($) Lease	Dec. 31, 2023 USD ($)
Commitments And Contingencies Disclosure [Line Items]
Allowance for credit losses on unused commitments	$ 95,000	$ 106,000
Number of lease renewals | Lease	2
Standby Letters of Credit [Member]
Commitments And Contingencies Disclosure [Line Items]
Financial instrument commitments expire within one year	$ 14,482,000
Maximum [Member]
Commitments And Contingencies Disclosure [Line Items]
Standby letters of credit expiration period	1 year
Lessee leasing arrangements, operating leases, renewal term	10 years
Minimum [Member]
Commitments And Contingencies Disclosure [Line Items]
Lessee leasing arrangements, operating leases, renewal term	5 years