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Subsequent Events (Details) - USD ($) $ in Thousands	1 Months Ended		12 Months Ended
	Jan. 31, 2021	Apr. 30, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Apr. 30, 2019	Mar. 31, 2019
Subsequent Event [Line Items]
Common Stock, Shares Authorized			90,000,000	90,000,000		90,000,000	45,000,000
Proceeds From Issuance Of Common Stock			$ 896,118	$ 472,746	$ 339,744
Common Stock [Member]
Subsequent Event [Line Items]
Common Stock, Shares Authorized		2,875,000
Proceeds From Issuance Of Common Stock		$ 170,400
Common Stock [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Common Stock, Shares Authorized	3,450,000
Proceeds From Issuance Of Common Stock	$ 221,400
Common Stock [Member] | Over-Allotment Option [Member]
Subsequent Event [Line Items]
Common Stock, Shares Authorized		375,000
Common Stock [Member] | Over-Allotment Option [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Common Stock, Shares Authorized	450,000

X

- Definition

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

+ References

Reference 1: 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

+ Details

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Balance Type:	na
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X

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3255-108585

+ Details

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X

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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- Details

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X

- Details

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X

- Details

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