v3.26.1
Note 17 - Fair Value Measurements - Estimated Fair Values of Financial Instruments (Details) - USD ($)
Dec. 31, 2025
Dec. 31, 2024
Debt securities available-for-sale $ 220,807,000 $ 116,053,000
Marketable equity securities 613,000 268,000
Reported Value Measurement [Member]    
Cash and cash equivalents 49,010,000 9,179,000
Interest-bearing time deposits 5,923,000 10,369,000
Debt securities available-for-sale 220,807,000 116,053,000
Marketable equity securities 613,000 268,000
Restricted investments in bank stock 2,717,000 2,300,000
Net loans 908,267,000 431,960
Accrued interest receivable 4,039,000 1,804,000
Bank owned life insurance 28,233,000 12,966,000
Deposits 1,110,774,000 489,529,000
Repurchase agreements 1,589,000 1,143,000
FHLB advances 5,500,000 43,050,000
Subordinated debt 9,892,000  
Accrued interest payable 1,969,000 1,736,000
Estimate of Fair Value Measurement [Member]    
Cash and cash equivalents 49,010,000 9,179,000
Interest-bearing time deposits 5,938,000 10,355,000
Debt securities available-for-sale 220,807,000 116,053,000
Marketable equity securities 613,000 268,000
Restricted investments in bank stock 2,717,000 2,300,000
Net loans 893,392,000 426,034
Accrued interest receivable 4,039,000 1,804,000
Bank owned life insurance 28,233,000 12,966,000
Deposits 1,109,528,000 489,001,000
Repurchase agreements 1,589,000 1,143,000
FHLB advances 5,486,000 42,839,000
Subordinated debt 9,892,000  
Accrued interest payable 1,969,000 1,736,000
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member]    
Cash and cash equivalents 49,010,000 9,179,000
Interest-bearing time deposits 0 0
Debt securities available-for-sale 6,502,000 2,202,000
Marketable equity securities 613,000 268,000
Restricted investments in bank stock 0 0
Net loans 0 0
Accrued interest receivable 0 0
Bank owned life insurance 0 0
Deposits 0 0
Repurchase agreements 0 0
FHLB advances 0 0
Subordinated debt 0  
Accrued interest payable 0 0
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member]    
Cash and cash equivalents 0 0
Interest-bearing time deposits 5,938,000 10,355,000
Debt securities available-for-sale 214,305,000 113,851,000
Marketable equity securities 0 0
Restricted investments in bank stock 2,717,000 2,300,000
Net loans 0 0
Accrued interest receivable 4,039,000 1,804,000
Bank owned life insurance 28,233,000 12,966,000
Deposits 1,109,528,000 489,001,000
Repurchase agreements 1,589,000 1,143,000
FHLB advances 5,486,000 42,839,000
Subordinated debt 9,892,000  
Accrued interest payable 1,969,000 1,736,000
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member]    
Cash and cash equivalents 0 0
Interest-bearing time deposits 0 0
Debt securities available-for-sale 0 0
Marketable equity securities 0 0
Restricted investments in bank stock 0 0
Net loans 893,392,000 426,034
Accrued interest receivable 0 0
Bank owned life insurance 0 0
Deposits 0 0
Repurchase agreements 0 0
FHLB advances 0 0
Subordinated debt 0  
Accrued interest payable $ 0 $ 0