Represents the amount of shares redesignated and reclassified during the period.

No definition available.

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- Definition

Total amount which can be issued under the ATM program.

+ References

No definition available.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

+ References

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- Definition

Current fair value of each cash settlement alternative for each freestanding forward contract.

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

Number of shares as a settlement alternative for each freestanding forward contract.

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- Definition

The maximum number of shares that could be issued to net share settle a contract, if applicable. If a contract does not have a fixed or determinable maximum number of shares that may be required to be issued, disclose the fact that a potentially infinite number of shares could be issued to settle the contract.

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- Definition

Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.

+ References

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- Definition

The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.

+ References

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- Definition

Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt.

+ References

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- Definition

Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased.

+ References

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- Definition

The cash inflow from the additional capital contribution to the entity.

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- Definition

Number of new stock issued during the period.

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Common and Preferred Stock (Details) - USD ($) $ / shares in Units, $ in Thousands			1 Months Ended				3 Months Ended			8 Months Ended	12 Months Ended
	Dec. 31, 2019	Dec. 30, 2019	Jan. 31, 2021	Apr. 30, 2020	Apr. 30, 2019	Sep. 30, 2018	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Dec. 31, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Jul. 31, 2019	Mar. 31, 2019	May 31, 2018	Mar. 31, 2018
Class of Stock [Line Items]
Common Stock, Shares Authorized	90,000,000				90,000,000			90,000,000		90,000,000	90,000,000	90,000,000			45,000,000
Proceeds From Issuance Of Common Stock											$ 896,118	$ 472,746	$ 339,744
Preferred stock, par value (in dollars per share)	$ 0.0001							$ 0.0001		$ 0.0001	$ 0.0001	$ 0.0001
Preferred stock, shares authorized	4,000,000							4,000,000		4,000,000	4,000,000	4,000,000
Preferred Stock, Shares Issued										0	0
Preferred stock, shares outstanding										0	0
Series A Junior Participating Preferred Stock [Member]
Class of Stock [Line Items]
Preferred Stock, Redesignated of Shares Authorized												200,000
Common Stock [Member]
Class of Stock [Line Items]
Common Stock, Shares Authorized				2,875,000
Stock Issued During Period, Shares, New Issues				2,875,000							14,418,612	7,993,519	6,507,263
Proceeds From Issuance Of Common Stock				$ 170,400
Common Stock [Member] \| Subsequent Event [Member]
Class of Stock [Line Items]
Common Stock, Shares Authorized			3,450,000
Proceeds From Issuance Of Common Stock			$ 221,400
Common Stock [Member] \| Forward Sale Agreement [Member]
Class of Stock [Line Items]
Common Stock, Shares Authorized				6,166,666	3,162,500	3,500,000											3,450,000
Stock Issued During Period, Shares, New Issues	3,162,500				3,500,000
Proceeds From Issuance Of Common Stock		$ 195,800			$ 186,000					$ 354,600
At-Market Equity Program [Member] \| Common Stock [Member]
Class of Stock [Line Items]
Forward Contract Indexed to Issuer's Equity, Shares							3,169,754
Stock Issued During Period, Shares, New Issues												886,768	3,057,263
Proceeds From Issuance Of Common Stock												$ 58,500	$ 180,300
Value Of Equity Instruments To Be Issued										0	$ 0					$ 250,000
At-Market Equity Program Two [Member] \| Common Stock [Member]
Class of Stock [Line Items]
Forward Contract Indexed to Issuer's Equity, Shares								2,003,118
Stock Issued During Period, Shares, New Issues									444,228
Proceeds From Issuance Of Common Stock									$ 32,600		359,500
Value Of Equity Instruments To Be Issued														$ 400,000
At-Market Equity Program Three [Member] \| Common Stock [Member]
Class of Stock [Line Items]
Value Of Equity Instruments To Be Issued										$ 0	$ 0
At-Market Equity Program Four [Member] \| Common Stock [Member]
Class of Stock [Line Items]
Forward Contract Indexed to Issuer's Equity, Shares											3,334,056
Forward Contract Indexed to Issuer's Equity, Settlement Alternatives, Shares, at Fair Value										3,129,982	3,129,982
Forward Contract Indexed to Issuer's Equity, Settlement Alternatives, Cash, at Fair Value										$ 177,700	$ 177,700
Stock Issued During Period, Shares, New Issues											204,074
Proceeds From Issuance Of Common Stock											$ 12,500
Value Of Equity Instruments To Be Issued							$ 400,000
Over-Allotment Option [Member] \| Common Stock [Member]
Class of Stock [Line Items]
Common Stock, Shares Authorized				375,000
Over-Allotment Option [Member] \| Common Stock [Member] \| Subsequent Event [Member]
Class of Stock [Line Items]
Common Stock, Shares Authorized			450,000
Over-Allotment Option [Member] \| Common Stock [Member] \| Forward Sale Agreement [Member]
Class of Stock [Line Items]
Common Stock, Shares Authorized					412,500												450,000
Common Stock [Member] \| Forward Sale Agreement [Member]
Class of Stock [Line Items]
Stock Issued During Period, Shares, New Issues						3,450,000
Proceeds From Issuance Of Common Stock						$ 160,200