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Note 5 - Capital Stock (Details Textual) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended				9 Months Ended
	Oct. 22, 2025	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Aug. 16, 2024
Share Repurchase Program, Authorized, Amount								$ 1,000,000
Share Repurchase Program, Remaining Authorized, Amount		$ 106,500				$ 106,500
Treasury Stock, Shares, Acquired		1,603,000				5,427,000
Treasury Stock, Value, Acquired, Cost Method		$ 230,450			$ 199,998	$ 783,360	$ 428,283
Common Stock, Dividends, Per Share, Declared		$ 0.44	$ 0.44	$ 0.44
Subsequent Event [Member]
Stock Repurchase Program, Additional Authorized Amount	$ 1,000,000
Common Stock, Dividends, Per Share, Declared	$ 0.44

X

- Definition

The additional amount of stock repurchase plan authorized.

+ References

No definition available.

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- Definition

Amount authorized for purchase of share under share repurchase plan. Includes, but is not limited to, repurchase of stock and unit of ownership.

+ References

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-Topic 505
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481520/505-30-50-4

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X

- Definition

Aggregate dividends declared during the period for each share of common stock outstanding.

+ References

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-Topic 505
-SubTopic 10
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-Subparagraph (SX 210.3-04)
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Amount remaining authorized for purchase of share under share repurchase plan. Includes, but is not limited to, repurchase of stock and unit of ownership.

+ References

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X

- Definition

Number of shares that have been repurchased during the period and are being held in treasury.

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- Definition

Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

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