Note 3 - Fair Value Measurements - Schedule of Fair Value, Assets and Liabilities Measured on Nonrecurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Collateral-dependent loans with an ACLL	$ 20,552	$ 14,373
Property held for sale	3,176	3,473
Fair Value, Inputs, Level 1 [Member]
Collateral-dependent loans with an ACLL	0	0
Property held for sale	0	0
Fair Value, Inputs, Level 2 [Member]
Collateral-dependent loans with an ACLL	20,552	14,373
Property held for sale	3,176	3,473
Fair Value, Inputs, Level 3 [Member]
Collateral-dependent loans with an ACLL	0	0
Property held for sale	0	0
Commercial Loan [Member]
Collateral-dependent loans with an ACLL	3,299
Commercial Loan [Member] | Fair Value, Inputs, Level 1 [Member]
Collateral-dependent loans with an ACLL	0
Commercial Loan [Member] | Fair Value, Inputs, Level 2 [Member]
Collateral-dependent loans with an ACLL	3,299
Commercial Loan [Member] | Fair Value, Inputs, Level 3 [Member]
Collateral-dependent loans with an ACLL	0
Commercial Real Estate Portfolio Segment [Member]
Collateral-dependent loans with an ACLL	16,653	13,488
Property held for sale	0	297
Commercial Real Estate Portfolio Segment [Member] | Fair Value, Inputs, Level 1 [Member]
Collateral-dependent loans with an ACLL	0	0
Property held for sale	0	0
Commercial Real Estate Portfolio Segment [Member] | Fair Value, Inputs, Level 2 [Member]
Collateral-dependent loans with an ACLL	16,653	13,488
Property held for sale	0	297
Commercial Real Estate Portfolio Segment [Member] | Fair Value, Inputs, Level 3 [Member]
Collateral-dependent loans with an ACLL	0	0
Property held for sale	0	0
Construction and Development Financial Receivable [Member]
Collateral-dependent loans with an ACLL	248	248
Property held for sale	3,176	3,176
Construction and Development Financial Receivable [Member] | Fair Value, Inputs, Level 1 [Member]
Collateral-dependent loans with an ACLL	0	0
Property held for sale	0	0
Construction and Development Financial Receivable [Member] | Fair Value, Inputs, Level 2 [Member]
Collateral-dependent loans with an ACLL	248	248
Property held for sale	3,176	3,176
Construction and Development Financial Receivable [Member] | Fair Value, Inputs, Level 3 [Member]
Collateral-dependent loans with an ACLL	0	0
Property held for sale	0	0
Residential Real Estate Financial Receivable [Member]
Collateral-dependent loans with an ACLL	352	637
Residential Real Estate Financial Receivable [Member] | Fair Value, Inputs, Level 1 [Member]
Collateral-dependent loans with an ACLL	0	0
Residential Real Estate Financial Receivable [Member] | Fair Value, Inputs, Level 2 [Member]
Collateral-dependent loans with an ACLL	352	637
Residential Real Estate Financial Receivable [Member] | Fair Value, Inputs, Level 3 [Member]
Collateral-dependent loans with an ACLL	$ 0	$ 0