Note 10 - Other Income, Net - Interest and Other Income Components (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended	9 Months Ended	12 Months Ended
Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Jun. 30, 2025	Sep. 30, 2025	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Interest income						$ 29,151	$ 27,093	$ 23,363
Amortization of discount on available-for-sale securities, net						4,103	20,145	5,277
Gain on deferred compensation plan investments						10,033	9,400	8,505
Charitable commitments						(6,294)	(23,742)	(14,850)
Other						587	658	1,810
Total	$ 10,392	$ 12,220	$ 5,131	$ 17,351	$ 27,743	$ 37,580	$ 33,554	$ 24,105

Represents gain (loss) on commitment.

No definition available.

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- Definition

Gains or losses on deferred compensation plan investments.

+ References

No definition available.

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- Definition

The sum of the periodic adjustments of the differences between securities' face values and purchase prices that are charged against earnings. This is called accretion if the security was purchased at a discount and amortization if it was purchased at premium. As a noncash item, this element is an adjustment to net income when calculating cash provided by or used in operations using the indirect method.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Publisher FASB
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- Definition

Amount of interest income (expense) classified as nonoperating.

+ References

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-Topic 815
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- Definition

The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business).

+ References

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-Paragraph 2
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- Definition

Amount of income (expense) related to nonoperating activities, classified as other.

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