Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering.

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-Name Accounting Standards Codification
-Topic 505
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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-Subparagraph (SX 210.5-02(29))
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Name:	us-gaap_StockIssuedDuringPeriodValueNewIssues
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Equity (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	6 Months Ended	9 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Sep. 30, 2020	Dec. 31, 2019
Common stock, shares authorized			100,000,000	60,000,000
At-The Market Shelf Registration, Equity Offering Sales Agreement, Aggregate Sales Price			$ 500,000
Stock Issued During Period, Shares, New Issues		618,654	79,155
Stock Issued During Period, Value, New Issues	$ 47,948	$ 47,854
Shares Issued, Price Per Share			$ 65.35
Authorized Shares, Prior to Charter Amendment [Member]
Common stock, shares authorized			60,000,000
Authorized Shares, After Charter Amendment [Member]
Common stock, shares authorized			100,000,000