Note 22 - Fair Value of Assets and Liabilities - Fair Value, Assets and Liabilities Measured on Nonrecurring Basis, Valuation Techniques (Details)

6 Months Ended

12 Months Ended

Jun. 30, 2026

USD ($)

Dec. 31, 2025

USD ($)

Mar. 31, 2026

USD ($)

Jun. 30, 2025

USD ($)

Mar. 31, 2025

USD ($)

Dec. 31, 2024

USD ($)

Servicing Asset at Fair Value, Amount

$ 7,022,000

$ 6,383,000

$ 6,615,000

$ 7,184,000

$ 7,351,000

$ 7,918,000

Fair Value, Inputs, Level 3 [Member] | Measurement Input, Comparability Adjustment [Member] | Valuation, Market Approach [Member]

Collateral dependent loans, fair value

1,364

33,484

Foreclosed assets

^[1]

$ 9,571,000

$ 308,000

Foreclosed assets, measurement input

^[1]

0.10

0.10

Fair Value, Inputs, Level 3 [Member] | Measurement Input, Comparability Adjustment [Member] | Valuation, Market Approach [Member] | Minimum [Member]

Collateral dependent loans, measurement input

0.10

Fair Value, Inputs, Level 3 [Member] | Measurement Input, Comparability Adjustment [Member] | Valuation, Market Approach [Member] | Maximum [Member]

Collateral dependent loans, measurement input

0.35

Fair Value, Inputs, Level 3 [Member] | Measurement Input, Comparability Adjustment [Member] | Valuation, Market Approach [Member] | Weighted Average [Member]

Collateral dependent loans, measurement input

0.19

0.307

Foreclosed assets, measurement input

^[1]

0.10

0.10

Fair Value, Inputs, Level 3 [Member] | Measurement Input, Prepayment Rate [Member]

Servicing Asset at Fair Value, Amount

$ 7,022,000

$ 6,383,000

Fair Value, Inputs, Level 3 [Member] | Measurement Input, Prepayment Rate [Member] | Minimum [Member]

Servicing Asset, Measurement Input

0.99

1.30

Fair Value, Inputs, Level 3 [Member] | Measurement Input, Prepayment Rate [Member] | Maximum [Member]

Servicing Asset, Measurement Input

3.32

7.30

Fair Value, Inputs, Level 3 [Member] | Measurement Input, Prepayment Rate [Member] | Weighted Average [Member]

Servicing Asset, Measurement Input

1.61

2.39

Fair Value, Inputs, Level 3 [Member] | Measurement Input, Discount Rate [Member]

Servicing Asset, Measurement Input

0.103

0.10

Fair Value, Inputs, Level 3 [Member] | Measurement Input, Discount Rate [Member] | Weighted Average [Member]

Servicing Asset, Measurement Input

0.103

0.10

[1]	There were no discounts taken on the collateral that comprises the balance of foreclosed assets as of December 31, 2024.