Note 17 - Fair Value Measurements - Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Debt securities available-for-sale	$ 220,807	$ 116,053
Marketable equity securities	613	268
Fair Value, Recurring [Member]
Debt securities available-for-sale	220,807	116,053
Marketable equity securities	613	268
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member]
Debt securities available-for-sale	6,502	2,202
Marketable equity securities	613	268
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member]
Debt securities available-for-sale	214,305	113,851
Marketable equity securities	0	0
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member]
Debt securities available-for-sale	0	0
Marketable equity securities	0	0
US Treasury Securities [Member]
Debt securities available-for-sale	6,502	2,202
US Treasury Securities [Member] \| Fair Value, Recurring [Member]
Debt securities available-for-sale	6,502	2,202
US Treasury Securities [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member]
Debt securities available-for-sale	6,502	2,202
US Treasury Securities [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member]
Debt securities available-for-sale	0	0
US Treasury Securities [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member]
Debt securities available-for-sale	0	0
US Government Agencies Debt Securities [Member]
Debt securities available-for-sale	47,838	25,449
US Government Agencies Debt Securities [Member] \| Fair Value, Recurring [Member]
Debt securities available-for-sale	47,838	25,449
US Government Agencies Debt Securities [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member]
Debt securities available-for-sale	0	0
US Government Agencies Debt Securities [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member]
Debt securities available-for-sale	47,838	25,449
US Government Agencies Debt Securities [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member]
Debt securities available-for-sale	0	0
Taxable Municipal Notes [Member]
Debt securities available-for-sale	32,474	5,631
Taxable Municipal Notes [Member] \| Fair Value, Recurring [Member]
Debt securities available-for-sale	32,474	5,631
Taxable Municipal Notes [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member]
Debt securities available-for-sale	0	0
Taxable Municipal Notes [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member]
Debt securities available-for-sale	32,474	5,631
Taxable Municipal Notes [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member]
Debt securities available-for-sale	0	0
Nontaxable Municipal Notes [Member]
Debt securities available-for-sale	85,753	51,796
Nontaxable Municipal Notes [Member] \| Fair Value, Recurring [Member]
Debt securities available-for-sale	85,753	51,796
Nontaxable Municipal Notes [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member]
Debt securities available-for-sale	0	0
Nontaxable Municipal Notes [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member]
Debt securities available-for-sale	85,753	51,796
Nontaxable Municipal Notes [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member]
Debt securities available-for-sale	0	0
US Government-sponsored Enterprises Debt Securities [Member] \| Fair Value, Recurring [Member]
Debt securities available-for-sale	45,232	27,098
US Government-sponsored Enterprises Debt Securities [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member]
Debt securities available-for-sale	0	0
US Government-sponsored Enterprises Debt Securities [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member]
Debt securities available-for-sale	45,232	27,098
US Government-sponsored Enterprises Debt Securities [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member]
Debt securities available-for-sale	0	0
Corporate Debt Securities [Member]
Debt securities available-for-sale	3,008	3,877
Corporate Debt Securities [Member] \| Fair Value, Recurring [Member]
Debt securities available-for-sale	3,008	3,877
Corporate Debt Securities [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member]
Debt securities available-for-sale	0	0
Corporate Debt Securities [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member]
Debt securities available-for-sale	3,008	3,877
Corporate Debt Securities [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member]
Debt securities available-for-sale	$ 0	$ 0