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Condensed Consolidated Statements of Changes In Stockholders' Equity (Unaudited) (Parentheticals) - shares	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Restricted Stock [Member]
Treasury stock acquired (in shares)	560,526	1,124,368
Net share settlement (in shares)	37,683
Shares transferred from treasury stock (in shares)	31,311
Other stock issuances (in shares)	12,099	11,929
Share-based Payment Arrangement, Option [Member]
Net share settlement (in shares)	115,284
Shares transferred from treasury stock (in shares)		449,007
Performance Shares [Member]
Shares transferred from treasury stock (in shares)	50,898

X

- Definition

Number of shares used to settle grantee's tax withholding obligation for award under share-based payment arrangement.

+ References

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Number of shares of stock issued attributable to transactions classified as other.

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Number of treasury shares or units reissued. Excludes reissuance of shares or units in treasury for award under share-based payment arrangement.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
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Number of shares that have been repurchased during the period and are being held in treasury.

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