Note 2 - Recent Accounting Pronouncements (Details Textual) - USD ($)	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Jun. 30, 2023	Mar. 31, 2023	Jan. 01, 2023	Dec. 31, 2022
Financing Receivable, Allowance for Credit Loss	$ 11,121,000	$ 10,922,000	$ 10,896,000	$ 9,411,000	$ 9,383,000		$ 9,468,000
Off-Balance-Sheet, Credit Loss, Liability	531,000	531,000	609,000	$ 671,000	741,000		546,000
Retained Earnings (Accumulated Deficit)	$ 164,051,000		154,301,000
Cumulative Effect, Period of Adoption, Adjustment [Member]
Financing Receivable, Allowance for Credit Loss					0		346,000
Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member]
Financing Receivable, Allowance for Credit Loss						$ 346,000
Off-Balance-Sheet, Credit Loss, Liability		$ 0	$ 0		$ 0	547,000	$ 547,000
Retained Earnings (Accumulated Deficit)						(629,000)
Deferred Tax Assets, Net of Valuation Allowance						$ 264,000