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Note 15 - Share-based Compensation	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Share-based Payment Arrangement [Text Block]	15. Share-Based Compensation Our share-based compensation plans are described in Note 18 of our annual report on Form 10-K for the year ended December 31, 2020. During the three months ended September 30, 2021 and 2020, we recognized total share-based compensation expense of $2.5 million and $1.9 million, respectively. During the nine months ended  September 30, 2021 and 2020, we recognized total share-based compensation expense of $9.5 million and $4.7 million, respectively. The total excess tax benefit recognized for share-based compensation arrangements during the nine months ended September 30, 2021 and 2020 was $0.4 million and $0.3 million, respectively.

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- Definition

The entire disclosure for share-based payment arrangement.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-URI http://asc.fasb.org/topic&trid=2228938

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