Note 10 - Fair Value of Financial Instruments - Financial Assets and Financial Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Debt Securities, Available-for-Sale, Excluding Accrued Interest	$ 274,887	$ 281,692
US Government Agencies Debt Securities [Member]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	3,968	4,155
US Treasury and Government [Member]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	43,926	44,308
US States and Political Subdivisions Debt Securities [Member]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	115,816	118,324
Corporate Debt Securities [Member]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	1,970	1,971
Collateralized Mortgage-Backed Securities [Member]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	25,777	26,494
Collateralized Mortgage Obligations [Member]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	76,899	79,661
Asset-Backed Securities [Member]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	6,531	6,779
Fair Value, Recurring [Member]
Loans held-for-sale	9,904	7,452
Fair Value, Recurring [Member] \| US Government Agencies Debt Securities [Member]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	3,968	4,155
Fair Value, Recurring [Member] \| US Treasury and Government [Member]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	43,926	44,308
Fair Value, Recurring [Member] \| US States and Political Subdivisions Debt Securities [Member]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	115,816	118,324
Fair Value, Recurring [Member] \| Corporate Debt Securities [Member]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	1,970	1,971
Fair Value, Recurring [Member] \| Collateralized Mortgage-Backed Securities [Member]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	25,777	26,494
Fair Value, Recurring [Member] \| Collateralized Mortgage Obligations [Member]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	76,899	79,661
Fair Value, Recurring [Member] \| Asset-Backed Securities [Member]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	6,531	6,779
Fair Value, Recurring [Member] \| Forward TBA Mortgage-backed Securities [Member]
Derivative assets	231
Derivative liabilities		55
Fair Value, Recurring [Member] \| Interest Rate Lock Commitments [Member]
Derivative liabilities	101	49
Fair Value, Recurring [Member] \| Mandatory Forward Commitments [Member]
Derivative liabilities	8
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member]
Loans held-for-sale	0	0
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member] \| US Government Agencies Debt Securities [Member]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	0	0
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member] \| US Treasury and Government [Member]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	43,926	44,308
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member] \| US States and Political Subdivisions Debt Securities [Member]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	0	0
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member] \| Corporate Debt Securities [Member]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	0	0
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member] \| Collateralized Mortgage-Backed Securities [Member]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	0	0
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member] \| Collateralized Mortgage Obligations [Member]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	0	0
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member] \| Asset-Backed Securities [Member]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	0	0
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member] \| Forward TBA Mortgage-backed Securities [Member]
Derivative assets	0
Derivative liabilities		0
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member] \| Interest Rate Lock Commitments [Member]
Derivative liabilities	0	0
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member] \| Mandatory Forward Commitments [Member]
Derivative liabilities	0
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member]
Loans held-for-sale	9,904	7,452
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member] \| US Government Agencies Debt Securities [Member]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	3,968	4,155
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member] \| US Treasury and Government [Member]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	0	0
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member] \| US States and Political Subdivisions Debt Securities [Member]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	115,816	118,324
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member] \| Corporate Debt Securities [Member]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	1,970	1,971
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member] \| Collateralized Mortgage-Backed Securities [Member]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	25,777	26,494
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member] \| Collateralized Mortgage Obligations [Member]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	76,899	79,661
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member] \| Asset-Backed Securities [Member]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	6,531	6,779
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member] \| Forward TBA Mortgage-backed Securities [Member]
Derivative assets	231
Derivative liabilities		55
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member] \| Interest Rate Lock Commitments [Member]
Derivative liabilities	0	0
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member] \| Mandatory Forward Commitments [Member]
Derivative liabilities	8
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member]
Loans held-for-sale	0	0
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member] \| US Government Agencies Debt Securities [Member]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	0	0
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member] \| US Treasury and Government [Member]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	0	0
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member] \| US States and Political Subdivisions Debt Securities [Member]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	0	0
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member] \| Corporate Debt Securities [Member]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	0	0
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member] \| Collateralized Mortgage-Backed Securities [Member]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	0	0
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member] \| Collateralized Mortgage Obligations [Member]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	0	0
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member] \| Asset-Backed Securities [Member]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	0	0
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member] \| Forward TBA Mortgage-backed Securities [Member]
Derivative assets	0
Derivative liabilities		0
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member] \| Interest Rate Lock Commitments [Member]
Derivative liabilities	101	$ 49
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member] \| Mandatory Forward Commitments [Member]
Derivative liabilities	$ 0