Note 16 - Fair Value Measurements - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Debt Securities, Available-for-Sale	$ 730,352	$ 617,092
Fair Value, Inputs, Level 1 [Member]
Debt Securities, Available-for-Sale	0	0
US Government Agencies Debt Securities [Member]
Debt Securities, Available-for-Sale	495,581	390,496
Collateralized Mortgage-Backed Securities [Member]
Debt Securities, Available-for-Sale	25,368	29,473
Municipal General Obligation Bonds [Member]
Debt Securities, Available-for-Sale	180,170	167,860
Municipal Revenue Bonds [Member]
Debt Securities, Available-for-Sale	28,733	28,763
Other Debt and Equity Securities [Member]
Debt Securities, Available-for-Sale	500	500
Fair Value, Recurring [Member]
Total assets	757,145	644,597
Total liabilities	27,050	27,964
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member]
Total assets	0	0
Total liabilities	0	0
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member]
Total assets	756,752	644,084
Total liabilities	27,050	27,964
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member]
Total assets	393	513
Total liabilities	0	0
Fair Value, Recurring [Member] \| US Government Agencies Debt Securities [Member]
Debt Securities, Available-for-Sale	495,581	390,496
Fair Value, Recurring [Member] \| US Government Agencies Debt Securities [Member] \| Fair Value, Inputs, Level 1 [Member]
Debt Securities, Available-for-Sale	0	0
Fair Value, Recurring [Member] \| US Government Agencies Debt Securities [Member] \| Fair Value, Inputs, Level 2 [Member]
Debt Securities, Available-for-Sale	495,581	390,496
Fair Value, Recurring [Member] \| US Government Agencies Debt Securities [Member] \| Fair Value, Inputs, Level 3 [Member]
Debt Securities, Available-for-Sale	0	0
Fair Value, Recurring [Member] \| Collateralized Mortgage-Backed Securities [Member]
Debt Securities, Available-for-Sale	25,368	29,473
Fair Value, Recurring [Member] \| Collateralized Mortgage-Backed Securities [Member] \| Fair Value, Inputs, Level 1 [Member]
Debt Securities, Available-for-Sale	0	0
Fair Value, Recurring [Member] \| Collateralized Mortgage-Backed Securities [Member] \| Fair Value, Inputs, Level 2 [Member]
Debt Securities, Available-for-Sale	25,368	29,473
Fair Value, Recurring [Member] \| Collateralized Mortgage-Backed Securities [Member] \| Fair Value, Inputs, Level 3 [Member]
Debt Securities, Available-for-Sale	0	0
Fair Value, Recurring [Member] \| Municipal General Obligation Bonds [Member]
Debt Securities, Available-for-Sale	180,170	167,860
Fair Value, Recurring [Member] \| Municipal General Obligation Bonds [Member] \| Fair Value, Inputs, Level 1 [Member]
Debt Securities, Available-for-Sale	0	0
Fair Value, Recurring [Member] \| Municipal General Obligation Bonds [Member] \| Fair Value, Inputs, Level 2 [Member]
Debt Securities, Available-for-Sale	179,777	167,347
Fair Value, Recurring [Member] \| Municipal General Obligation Bonds [Member] \| Fair Value, Inputs, Level 3 [Member]
Debt Securities, Available-for-Sale	393	513
Fair Value, Recurring [Member] \| Municipal Revenue Bonds [Member]
Debt Securities, Available-for-Sale	28,733	28,763
Fair Value, Recurring [Member] \| Municipal Revenue Bonds [Member] \| Fair Value, Inputs, Level 1 [Member]
Debt Securities, Available-for-Sale	0	0
Fair Value, Recurring [Member] \| Municipal Revenue Bonds [Member] \| Fair Value, Inputs, Level 2 [Member]
Debt Securities, Available-for-Sale	28,733	28,763
Fair Value, Recurring [Member] \| Municipal Revenue Bonds [Member] \| Fair Value, Inputs, Level 3 [Member]
Debt Securities, Available-for-Sale	0	0
Fair Value, Recurring [Member] \| Other Debt and Equity Securities [Member]
Debt Securities, Available-for-Sale	500	500
Fair Value, Recurring [Member] \| Other Debt and Equity Securities [Member] \| Fair Value, Inputs, Level 1 [Member]
Debt Securities, Available-for-Sale	0	0
Fair Value, Recurring [Member] \| Other Debt and Equity Securities [Member] \| Fair Value, Inputs, Level 2 [Member]
Debt Securities, Available-for-Sale	500	500
Fair Value, Recurring [Member] \| Other Debt and Equity Securities [Member] \| Fair Value, Inputs, Level 3 [Member]
Debt Securities, Available-for-Sale	0	0
Fair Value, Recurring [Member] \| Interest Rate Swap [Member]
Derivative Asset	26,793	27,505
Derivative Liability	27,050	27,964
Fair Value, Recurring [Member] \| Interest Rate Swap [Member] \| Fair Value, Inputs, Level 1 [Member]
Derivative Asset	0	0
Derivative Liability	0	0
Fair Value, Recurring [Member] \| Interest Rate Swap [Member] \| Fair Value, Inputs, Level 2 [Member]
Derivative Asset	26,793	27,505
Derivative Liability	27,050	27,964
Fair Value, Recurring [Member] \| Interest Rate Swap [Member] \| Fair Value, Inputs, Level 3 [Member]
Derivative Asset	0	0
Derivative Liability	$ 0	$ 0

Fair value portion of asset recognized for present right to economic benefit.

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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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