Note 16 - Employee Benefit Plans - Deferred Compensation Agreements (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Balance, beginning	$ 38,255	$ 32,353	$ 24,713
Employee deferrals	4,306	3,615	4,900
Company match and interest	4,788	2,776	3,048
Cash payments made	(549)	(489)	(308)
Balance, ending	46,800	38,255	32,353
Supplemental Executive Retirement Plans [Member]
Balance, beginning	8,165	7,273	6,189
Company match and interest	889	1,286	1,532
Cash payments made	(365)	(394)	(448)
Balance, ending	$ 8,689	$ 8,165	$ 7,273

The compensation expense recognized during the period pertaining to the deferred compensation arrangement.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 710
-SubTopic 10
-Name Accounting Standards Codification
-Section 30
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483043/710-10-30-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-1

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- Definition

Amount of contributions made by employer into fund established for purposes of making future disbursement to individual in accordance with deferred compensation arrangement.

+ References

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- Definition

Amount of distribution made to individual in accordance with deferred compensation arrangement.

+ References

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- Definition

Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements. Represents currently earned compensation under compensation arrangements that is not actually paid until a later date.

+ References

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