Note 10 - Fair Value of Financial Instruments - Financial Assets and Financial Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2026	Dec. 31, 2025
Debt Securities, Available-for-Sale, Excluding Accrued Interest	$ 272,824	$ 281,692
US Government Agencies Debt Securities [Member]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	3,662	4,155
US Treasury and Government [Member]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	43,472	44,308
US States and Political Subdivisions Debt Securities [Member]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	117,639	118,324
Corporate Debt Securities [Member]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	983	1,971
Collateralized Mortgage-Backed Securities [Member]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	23,939	26,494
Collateralized Mortgage Obligations [Member]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	76,990	79,661
Asset-Backed Securities [Member]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	6,139	6,779
Fair Value, Recurring [Member]
Loans held-for-sale	12,812	7,452
Fair Value, Recurring [Member] \| US Government Agencies Debt Securities [Member]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	3,662	4,155
Fair Value, Recurring [Member] \| US Treasury and Government [Member]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	43,472	44,308
Fair Value, Recurring [Member] \| US States and Political Subdivisions Debt Securities [Member]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	117,639	118,324
Fair Value, Recurring [Member] \| Corporate Debt Securities [Member]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	983	1,971
Fair Value, Recurring [Member] \| Collateralized Mortgage-Backed Securities [Member]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	23,939	26,494
Fair Value, Recurring [Member] \| Collateralized Mortgage Obligations [Member]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	76,990	79,661
Fair Value, Recurring [Member] \| Asset-Backed Securities [Member]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	6,139	6,779
Fair Value, Recurring [Member] \| Forward TBA Mortgage-backed Securities [Member]
Derivative assets	461
Derivative liabilities		55
Fair Value, Recurring [Member] \| Interest Rate Lock Commitments [Member]
Derivative liabilities	88	49
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	43,472	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 2 [Member]
Loans held-for-sale	12,812	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	3,662	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	117,639	118,324
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member] \| Corporate Debt Securities [Member]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	983	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	23,939	26,494
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member] \| Collateralized Mortgage Obligations [Member]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	76,990	79,661
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member] \| Asset-Backed Securities [Member]
Debt Securities, Available-for-Sale, Excluding Accrued Interest	6,139	6,779
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member] \| Forward TBA Mortgage-backed Securities [Member]
Derivative assets	461
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 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	$ 88	$ 49