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Note 10 - Stock-based Compensation (Tables)

12 Months Ended

Dec. 31, 2024

Notes Tables

Share-Based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block]

						Weighted
						Average
		Shares				Fair Value
Nonvested at beginning of year			355,890			$	34.18
Vested			(115,762	)			32.02
Forfeited			(11,482	)			34.09
Nonvested at end of year			228,646			$	35.84

Corporate and Bank Board Members [Member]

Notes Tables

Disclosure of Share-Based Compensation Arrangements by Share-Based Payment Award [Table Text Block]

						Total Cost
Grant Year		Shares Granted				(in thousands)			Covered Period
2021			10,489			$	344		June 1, 2021 - May 31, 2022
2022			11,166				359		June 1, 2022 - May 31, 2023
2023			11,529				350		June 1, 2023 - May 31, 2024
2024			11,316				423		June 1, 2024 - May 31, 2025

X

- Definition

Tabular disclosure of share-based payment arrangement.

+ References

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-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-SubTopic 10
-Topic 718
-Publisher FASB
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