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Consolidated Statements of Total Equity (Unaudited) (Parenthetical) - shares	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Sep. 30, 2020	Mar. 31, 2020	Sep. 30, 2019
At-the-market Equity Offering Program, Common Stock Issued	1,000,000.0
Common Stock [Member]
Common Stock, Shares, Outstanding	49,124,801	48,076,643	48,025,359	48,061,921	48,025,359	47,997,366
Stock issued under employee incentive plans (shares)	29,655	14,722	27,993
At-the-market Equity Offering Program, Common Stock Issued	1,018,503

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At-the-market Equity Offering Program, Common Stock Issued

+ References

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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Number, after forfeiture, of shares or units issued under share-based payment arrangement. Excludes shares or units issued under employee stock ownership plan (ESOP).

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
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-Name Accounting Standards Codification
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