Note 8 - Fair Value - Schedule of Financial Assets and Liabilities at Fair Value Measured on Recurring Basis (Details) - USD ($)	Mar. 31, 2026	Dec. 31, 2025
Investment securities	$ 1,484,198,000	$ 1,343,457,000
Interest Rate Swap [Member]
Derivative asset		911,000
Derivative liabilities	958,000	911,000
Interest Rate Contract [Member]
Derivative asset	52,000	71,000
Forward Sales Contract [Member]
Derivative asset	51,000	0
Fair Value, Recurring [Member]
Investment securities	1,484,198,000	1,343,457,000
Equity securities	876,000	370,000
Loans held for sale	1,919,000	1,516,000
Fair Value, Recurring [Member] \| Fair Value Hedging [Member]
Derivative liabilities	324,000	529,000
Fair Value, Recurring [Member] \| Interest Rate Swap [Member]
Derivative asset	958,000	911,000
Derivative liabilities	958,000	911,000
Fair Value, Recurring [Member] \| Interest Rate Contract [Member]
Derivative asset	52,000	71,000
Fair Value, Recurring [Member] \| Forward Sales Contract [Member]
Derivative liabilities	51,000	15,000
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member]
Investment securities	0	0
Equity securities	876,000	370,000
Loans held for sale	0	0
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member] \| Fair Value Hedging [Member]
Derivative liabilities	0	0
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member] \| Interest Rate Swap [Member]
Derivative asset	0	0
Derivative liabilities	0	0
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member] \| Interest Rate Contract [Member]
Derivative asset	0	0
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member] \| Forward Sales Contract [Member]
Derivative liabilities	0	0
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member]
Investment securities	1,483,224,000	1,342,239,000
Equity securities	0	0
Loans held for sale	1,919,000	1,516,000
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member] \| Fair Value Hedging [Member]
Derivative liabilities	324,000	529,000
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member] \| Interest Rate Swap [Member]
Derivative asset	958,000	911,000
Derivative liabilities	958,000	911,000
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member] \| Interest Rate Contract [Member]
Derivative asset	52,000	71,000
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member] \| Forward Sales Contract [Member]
Derivative liabilities	51,000	15,000
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member]
Investment securities	974,000	1,218,000
Equity securities	0	0
Loans held for sale	0	0
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member] \| Fair Value Hedging [Member]
Derivative liabilities	0	0
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member] \| Interest Rate Swap [Member]
Derivative asset	0	0
Derivative liabilities	0	0
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member] \| Interest Rate Contract [Member]
Derivative asset	0	0
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member] \| Forward Sales Contract [Member]
Derivative liabilities	0	0
US Treasury and Government [Member]
Investment securities	94,898,000	95,295,000
US Treasury and Government [Member] \| Fair Value, Recurring [Member]
Investment securities	94,898,000	95,295,000
US Treasury and Government [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member]
Investment securities	0	0
US Treasury and Government [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member]
Investment securities	94,898,000	95,295,000
US Treasury and Government [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member]
Investment securities	0	0
US States and Political Subdivisions Debt Securities [Member]
Investment securities	625,956,000	503,697,000
US States and Political Subdivisions Debt Securities [Member] \| Fair Value, Recurring [Member]
Investment securities	625,956,000	503,697,000
US States and Political Subdivisions Debt Securities [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member]
Investment securities	0	0
US States and Political Subdivisions Debt Securities [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member]
Investment securities	625,956,000	503,697,000
US States and Political Subdivisions Debt Securities [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member]
Investment securities	0	0
Corporate Debt Securities [Member]
Investment securities	32,073,000	13,045,000
Corporate Debt Securities [Member] \| Fair Value, Recurring [Member]
Investment securities	32,073,000	13,045,000
Corporate Debt Securities [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member]
Investment securities	0	0
Corporate Debt Securities [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member]
Investment securities	31,099,000	11,827,000
Corporate Debt Securities [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member]
Investment securities	974,000	1,218,000
Collateralized Mortgage-Backed Securities [Member]
Investment securities	552,731,000	547,134,000
Collateralized Mortgage-Backed Securities [Member] \| Fair Value, Recurring [Member]
Investment securities	552,731,000	547,134,000
Collateralized Mortgage-Backed Securities [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member]
Investment securities	0	0
Collateralized Mortgage-Backed Securities [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member]
Investment securities	552,731,000	547,134,000
Collateralized Mortgage-Backed Securities [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member]
Investment securities	0	0
Collateralized Mortgage Obligations [Member]
Investment securities	176,660,000	182,216,000
Collateralized Mortgage Obligations [Member] \| Fair Value, Recurring [Member]
Investment securities	176,660,000	182,216,000
Collateralized Mortgage Obligations [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member]
Investment securities	0	0
Collateralized Mortgage Obligations [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member]
Investment securities	176,660,000	182,216,000
Collateralized Mortgage Obligations [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member]
Investment securities	0	0
Small Business Administration [Member]
Investment securities	1,880,000	2,070,000
Small Business Administration [Member] \| Fair Value, Recurring [Member]
Investment securities	1,880,000	2,070,000
Small Business Administration [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member]
Investment securities	0	0
Small Business Administration [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member]
Investment securities	1,880,000	2,070,000
Small Business Administration [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member]
Investment securities	$ 0	$ 0

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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+ Details

Name:	us-gaap_AvailableForSaleSecuritiesDebtSecurities
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

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