Note 9 - Share-based Compensation (Tables)

12 Months Ended

Dec. 31, 2024

Notes Tables

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

	2024
Expected dividend yield at date of grant		1.44	%
Expected stock price volatility		33.83	%
Risk-free interest rate		4.13	%
Expected life of options (in years)		4.0

	2024			2023			2022
Expected dividend yield at date of grant		1.94	%		2.13	%		3.39	%
Expected stock price volatility		33.75	%		35.12	%		35.52	%
Risk-free interest rate		4.50	%		3.61	%		2.33	%
Expected life of options (in years)		5.0			6.85			6.29

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

	Number of Options		Weighted Average Exercise Price		Weighted Average Remaining Contractual Terms (Years)		Aggregate Intrinsic Value (In thousands)
Outstanding at December 31, 2023		—	$	—
Granted		404,833	$	39.54
Exercised		—	$	—
Forfeited		—	$	—
Outstanding at December 31, 2024		404,833	$	39.54		5.05	$	—
Exercisable at December 31, 2024		—	$	—		—	$	—

	Number of Options		Weighted Average Exercise Price		Weighted Average Remaining Contractual Terms (Years)		Aggregate Intrinsic Value (In thousands)
Outstanding at December 31, 2023		569,168	$	35.72
Granted		54,530	$	29.76
Exercised		75,283	$	23.27
Expired		21,289	$	50.32
Forfeited		56,805	$	43.83
Outstanding at December 31, 2024		470,321	$	35.38		5.46	$	146
Exercisable at December 31, 2024		322,711	$	33.45		4.45	$	146

Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value, Intrinsic Value of Exercised and Vested in Period, and Fair Value of Vested in Period [Table Text Block]

	2024		2023		2022
Weighted average grant date fair value of stock options granted	$	11.12	$	13.29	$	9.43
Intrinsic value of stock options exercised (in thousands)	$	1,275	$	2,037	$	648
Intrinsic value of stock options vested (in thousands)	$	146	$	3,894	$	4,369

Schedule of Nonvested Share Activity [Table Text Block]

	Common Stock Outstanding		Common Stock Weighted Average Grant Date Fair Value Per Share
Outstanding at December 31, 2023		6,058	$	42.92
Granted		—	$	—
Vested		—	$	—
Forfeited		6,058	$	42.92
Outstanding at December 31, 2024		—	$	—