Note 11 - Fair Value Measurements - Fair Value of Assets and Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Securities available for sale, at fair value (cost: 2025—$243,439; 2024—$232,630)	$ 226,403	$ 208,549
Collateralized Mortgage-Backed Securities [Member]
Securities available for sale, at fair value (cost: 2025—$243,439; 2024—$232,630)	10,305	9,611
Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member]
Securities available for sale, at fair value (cost: 2025—$243,439; 2024—$232,630)	148,006	131,736
US States and Political Subdivisions Debt Securities [Member]
Securities available for sale, at fair value (cost: 2025—$243,439; 2024—$232,630)	53,585	47,076
US Government-sponsored Enterprises Debt Securities [Member]
Securities available for sale, at fair value (cost: 2025—$243,439; 2024—$232,630)		2,440
Other Debt Obligations [Member]
Securities available for sale, at fair value (cost: 2025—$243,439; 2024—$232,630)	8,800	11,286
Fair Value, Recurring [Member]
Loans held for sale	135,676	135,909
Fair Value, Recurring [Member] \| Mortgage Banking [Member]
Derivatives Assets, fair value	1,016	897
Derivatives liabilities, fair value	477	46
Fair Value, Recurring [Member] \| Interest Rate Swap [Member]
Derivatives Assets, fair value	7,343	12,575
Derivatives liabilities, fair value	7,343	12,575
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] \| Mortgage Banking [Member]
Derivatives Assets, fair value	0	0
Derivatives liabilities, fair value	0	0
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member] \| Interest Rate Swap [Member]
Derivatives Assets, fair value	0	0
Derivatives liabilities, fair value	0	0
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member]
Loans held for sale	135,676	135,909
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member] \| Mortgage Banking [Member]
Derivatives Assets, fair value	0	0
Derivatives liabilities, fair value	0	0
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member] \| Interest Rate Swap [Member]
Derivatives Assets, fair value	7,343	12,575
Derivatives liabilities, fair value	7,343	12,575
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] \| Mortgage Banking [Member]
Derivatives Assets, fair value	1,016	897
Derivatives liabilities, fair value	477	46
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member] \| Interest Rate Swap [Member]
Derivatives Assets, fair value	0	0
Derivatives liabilities, fair value	0	0
Fair Value, Recurring [Member] \| Collateralized Mortgage-Backed Securities [Member]
Securities available for sale, at fair value (cost: 2025—$243,439; 2024—$232,630)	10,305	9,611
Fair Value, Recurring [Member] \| Collateralized Mortgage-Backed Securities [Member] \| Fair Value, Inputs, Level 1 [Member]
Securities available for sale, at fair value (cost: 2025—$243,439; 2024—$232,630)	0	0
Fair Value, Recurring [Member] \| Collateralized Mortgage-Backed Securities [Member] \| Fair Value, Inputs, Level 2 [Member]
Securities available for sale, at fair value (cost: 2025—$243,439; 2024—$232,630)	10,305	9,611
Fair Value, Recurring [Member] \| Collateralized Mortgage-Backed Securities [Member] \| Fair Value, Inputs, Level 3 [Member]
Securities available for sale, at fair value (cost: 2025—$243,439; 2024—$232,630)	0	0
Fair Value, Recurring [Member] \| Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member]
Securities available for sale, at fair value (cost: 2025—$243,439; 2024—$232,630)	148,006	131,736
Fair Value, Recurring [Member] \| Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member] \| Fair Value, Inputs, Level 1 [Member]
Securities available for sale, at fair value (cost: 2025—$243,439; 2024—$232,630)	0	0
Fair Value, Recurring [Member] \| Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member] \| Fair Value, Inputs, Level 2 [Member]
Securities available for sale, at fair value (cost: 2025—$243,439; 2024—$232,630)	148,006	131,736
Fair Value, Recurring [Member] \| Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member] \| Fair Value, Inputs, Level 3 [Member]
Securities available for sale, at fair value (cost: 2025—$243,439; 2024—$232,630)	0	0
Fair Value, Recurring [Member] \| Private Equity Funds [Member]
Securities available for sale, at fair value (cost: 2025—$243,439; 2024—$232,630)	5,707	6,400
Fair Value, Recurring [Member] \| Private Equity Funds [Member] \| Fair Value, Inputs, Level 1 [Member]
Securities available for sale, at fair value (cost: 2025—$243,439; 2024—$232,630)	0	0
Fair Value, Recurring [Member] \| Private Equity Funds [Member] \| Fair Value, Inputs, Level 2 [Member]
Securities available for sale, at fair value (cost: 2025—$243,439; 2024—$232,630)	5,707	6,400
Fair Value, Recurring [Member] \| Private Equity Funds [Member] \| Fair Value, Inputs, Level 3 [Member]
Securities available for sale, at fair value (cost: 2025—$243,439; 2024—$232,630)	0	0
Fair Value, Recurring [Member] \| US States and Political Subdivisions Debt Securities [Member]
Securities available for sale, at fair value (cost: 2025—$243,439; 2024—$232,630)	53,585	47,076
Fair Value, Recurring [Member] \| US States and Political Subdivisions Debt Securities [Member] \| Fair Value, Inputs, Level 1 [Member]
Securities available for sale, at fair value (cost: 2025—$243,439; 2024—$232,630)	0	0
Fair Value, Recurring [Member] \| US States and Political Subdivisions Debt Securities [Member] \| Fair Value, Inputs, Level 2 [Member]
Securities available for sale, at fair value (cost: 2025—$243,439; 2024—$232,630)	53,585	47,076
Fair Value, Recurring [Member] \| US States and Political Subdivisions Debt Securities [Member] \| Fair Value, Inputs, Level 3 [Member]
Securities available for sale, at fair value (cost: 2025—$243,439; 2024—$232,630)	0	0
Fair Value, Recurring [Member] \| US Government-sponsored Enterprises Debt Securities [Member]
Securities available for sale, at fair value (cost: 2025—$243,439; 2024—$232,630)		2,440
Fair Value, Recurring [Member] \| US Government-sponsored Enterprises Debt Securities [Member] \| Fair Value, Inputs, Level 1 [Member]
Securities available for sale, at fair value (cost: 2025—$243,439; 2024—$232,630)		0
Fair Value, Recurring [Member] \| US Government-sponsored Enterprises Debt Securities [Member] \| Fair Value, Inputs, Level 2 [Member]
Securities available for sale, at fair value (cost: 2025—$243,439; 2024—$232,630)		2,440
Fair Value, Recurring [Member] \| US Government-sponsored Enterprises Debt Securities [Member] \| Fair Value, Inputs, Level 3 [Member]
Securities available for sale, at fair value (cost: 2025—$243,439; 2024—$232,630)		0
Fair Value, Recurring [Member] \| Other Debt Obligations [Member]
Securities available for sale, at fair value (cost: 2025—$243,439; 2024—$232,630)	8,800	11,286
Fair Value, Recurring [Member] \| Other Debt Obligations [Member] \| Fair Value, Inputs, Level 1 [Member]
Securities available for sale, at fair value (cost: 2025—$243,439; 2024—$232,630)	0	0
Fair Value, Recurring [Member] \| Other Debt Obligations [Member] \| Fair Value, Inputs, Level 2 [Member]
Securities available for sale, at fair value (cost: 2025—$243,439; 2024—$232,630)	8,800	11,286
Fair Value, Recurring [Member] \| Other Debt Obligations [Member] \| Fair Value, Inputs, Level 3 [Member]
Securities available for sale, at fair value (cost: 2025—$243,439; 2024—$232,630)	$ 0	$ 0