Note 4 - Fair Value Measurements - Schedule of Fair Value, Assets and Liabilities Measured on Nonrecurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Collateral-dependent loans with an ACLL	$ 14,373	$ 3,583
Property held for sale	3,473	4,777
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	14,373	3,583
Property held for sale	3,473	4,777
Fair Value, Inputs, Level 3 [Member]
Collateral-dependent loans with an ACLL	0	0
Property held for sale	0	0
Commercial Real Estate Portfolio Segment [Member]
Collateral-dependent loans with an ACLL	13,488	3,051
Property held for sale	297	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	13,488	3,051
Property held for sale	297	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	350
Property held for sale	3,176	4,480
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	350
Property held for sale	3,176	4,480
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	637	182
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	637	182
Residential Real Estate Financial Receivable [Member] | Fair Value, Inputs, Level 3 [Member]
Collateral-dependent loans with an ACLL	$ 0	$ 0