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Note 11 - Stock-based Compensation (Tables)

9 Months Ended

Sep. 30, 2025

Notes Tables

Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

		September 30,				December 31,
		2025				2024
Dividend yield			2.79	%			2.57	%
Expected volatility			38.45	%			29.55	%
Risk-free interest rate			3.98	%			3.82	%
Expected term in years			6.2				6.3
Weighted-average grant date fair value per option granted		$	13.21			$	11.36

Share-Based Payment Arrangement, Option, Activity [Table Text Block]

		Shares				Weighted-Average Exercise Price				Weighted-Average Remaining Contractual Term In Years				Aggregate Value
Outstanding at January 1, 2025			537,901			$	31.55				6.75			$	5,187,207
Granted			138,372				40.14				9.87				—
Less exercised			(6,000	)			29.30				—				80,460
Outstanding at September 30, 2025			670,273			$	33.34				6.83			$	4,595,894
Expected to vest, assuming a 0.31% annual forfeiture rate at, September 30, 2025 (1)			652,718			$	33.21				6.77				4,555,924
Exercisable at September 30, 2025			383,098			$	30.15				5.35			$	3,789,646

Nonvested Restricted Stock Shares Activity [Table Text Block]

Nonvested Shares		Shares				Weighted-Average Grant-Date Fair Value Per Share
Nonvested at January 1, 2025			103,063			$	35.05
Granted			37,872				40.14
Less vested			(37,964	)			30.75
Nonvested at September 30, 2025			102,971			$	37.73

X

- Definition

Tabular disclosure of the changes in outstanding nonvested restricted stock shares.

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