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Note 11 - Stockholders' Equity and Stock Incentive Plans - Share Repurchases (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Shares repurchased (2) (in shares) | [1],[2] | 6,537 | 9,424 | 1,310
Total cost, including brokerage fees (3) | [2],[3] | $ 412,655 | $ 541,642 | $ 80,782
Average repurchase price per share (4) (in dollars per share) | [2],[4] | $ 63.13 | $ 57.48 | $ 61.67
[1] | All shares repurchased have been retired and constitute authorized but unissued shares.
[2] | Shares repurchased reflect repurchases settled during the twelve months ended December 31, 2023, 2022 and 2021. These amounts exclude repurchases, if any, traded but not yet settled on or before December 31 of each year.
[3] | Costs exclude 1% excise tax on corporate stock buybacks that was enacted under the Inflation Reduction Act of 2022 and became effective January 1, 2023.
[4] | Amounts in the table may not recalculate exactly due to rounding. Average repurchase price per share is calculated based on unrounded numbers and excludes the 1% excise tax.

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