Note 4 - Fair Value Measurements - Schedule of Fair Value, Assets and Liabilities Measured on Nonrecurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Residential mortgage loans held for sale	$ 0	$ 227
Collateral-dependent loans with an ACLL	3,583	3,638
Property held for sale	4,777	9,090
Commercial Real Estate Portfolio Segment [Member]
Collateral-dependent loans with an ACLL	3,051	2,417
Property held for sale	297	1,170
Construction and Development Financial Receivable [Member]
Collateral-dependent loans with an ACLL	350	693
Property held for sale	4,480	7,893
Residential Real Estate Financial Receivable [Member]
Collateral-dependent loans with an ACLL	182	528
Property held for sale	0	27
Fair Value, Inputs, Level 1 [Member]
Residential mortgage loans held for sale	0	0
Collateral-dependent loans with an ACLL	0	0
Property held for sale	0	0
Fair Value, Inputs, Level 1 [Member] | Commercial Real Estate Portfolio Segment [Member]
Collateral-dependent loans with an ACLL	0	0
Property held for sale	0	0
Fair Value, Inputs, Level 1 [Member] | Construction and Development Financial Receivable [Member]
Collateral-dependent loans with an ACLL	0	0
Property held for sale	0	0
Fair Value, Inputs, Level 1 [Member] | Residential Real Estate Financial Receivable [Member]
Collateral-dependent loans with an ACLL	0	0
Property held for sale	0	0
Fair Value, Inputs, Level 2 [Member]
Residential mortgage loans held for sale	0	227
Collateral-dependent loans with an ACLL	3,583	3,638
Property held for sale	4,777	9,090
Fair Value, Inputs, Level 2 [Member] | Commercial Real Estate Portfolio Segment [Member]
Collateral-dependent loans with an ACLL	3,051	2,417
Property held for sale	297	1,170
Fair Value, Inputs, Level 2 [Member] | Construction and Development Financial Receivable [Member]
Collateral-dependent loans with an ACLL	350	693
Property held for sale	4,480	7,893
Fair Value, Inputs, Level 2 [Member] | Residential Real Estate Financial Receivable [Member]
Collateral-dependent loans with an ACLL	182	528
Property held for sale	0	27
Fair Value, Inputs, Level 3 [Member]
Residential mortgage loans held for sale	0	0
Collateral-dependent loans with an ACLL	0	0
Property held for sale	0	0
Fair Value, Inputs, Level 3 [Member] | Commercial Real Estate Portfolio Segment [Member]
Collateral-dependent loans with an ACLL	0	0
Property held for sale	0	0
Fair Value, Inputs, Level 3 [Member] | Construction and Development Financial Receivable [Member]
Collateral-dependent loans with an ACLL	0	0
Property held for sale	0	0
Fair Value, Inputs, Level 3 [Member] | Residential Real Estate Financial Receivable [Member]
Collateral-dependent loans with an ACLL	0	0
Property held for sale	$ 0	$ 0