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Note 10 - Stockholders' Equity and Stock Incentive Plans - Share Repurchases (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands

12 Months Ended

Dec. 31, 2021

Dec. 31, 2020

Dec. 31, 2019

Shares repurchased (2) (in shares)

^[1],[2]

1,310

683

1,087

Total cost, including brokerage fees

^[2]

$ 80,782

$ 11,121

$ 28,045

Average repurchase price per share (3) (in dollars per share)

^[2],[3]

$ 61.67

$ 16.29

$ 25.80

[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, 2021, 2020 and 2019. These amounts exclude repurchases, if any, traded but not yet settled on or before December 31, 2021, 2020 and 2019.
[3]	Figures in the table may not recalculate exactly due to rounding. Average repurchase price per share is calculated based on unrounded numbers.

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- Definition

Average repurchase price per share under the share repurchase program.

+ References

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Number of shares that have been repurchased and retired during the period.

+ References

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-Publisher FASB
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Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital).

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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