Note 15 - Employee Benefit Plans - Deferred Compensation Agreements (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Balance, beginning	$ 32,353	$ 24,713	$ 19,474
Employee deferrals	3,615	4,900	3,959
Company match and interest	2,776	3,048	2,628
Cash payments made	(489)	(308)	(1,348)
Balance, ending	38,255	32,353	24,713
Supplemental Executive Retirement Plans [Member]
Balance, beginning	7,273	6,189	5,160
Company match and interest	1,286	1,532	1,193
Cash payments made	(394)	(448)	(164)
Balance, ending	$ 8,165	$ 7,273	$ 6,189

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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5047-113901

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 710
-SubTopic 10
-Section 30
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=6409875&loc=d3e20015-108363

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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

No definition available.

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