Subsequent Events (Details) - Subsequent Event - USD ($)	Feb. 11, 2021	Feb. 09, 2021
Subsequent Event [Line Items]
Payment to fund equity transaction		$ 69,500,000
Convertible Debt \| Convertible Senior Notes Due 2026
Subsequent Event [Line Items]
Debt instrument, face amount		$ 650,000,000
Interest rate, stated percentage		0.00%
Debt instrument, debt default, period when payment due of special interest		30 days
Debt instrument, debt default, written notice period		60 days
Debt instrument, debt default, amount outstanding threshold		$ 50,000,000
Debt instrument, debt default, percent of aggregate principal amount		25.00%
Debt instrument, debt default, period of special interest payments to meet covenants		180 days
Debt instrument, debt default, period of special interest payments to meet covenants, maximum interest rate		0.50%
Convertible Debt \| Convertible Senior Notes Due 2026, Option Notes
Subsequent Event [Line Items]
Debt instrument, face amount		$ 97,500,000
Proceeds from issuance of debt	$ 27,500,000	$ 70,000,000

Debt Instrument, Debt Default, Amount Outstanding Threshold

No definition available.

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- Definition

Debt Instrument, Debt Default, Percent Of Aggregate Principal Amount

+ References

No definition available.

+ Details

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- Definition

Debt Instrument, Debt Default, Period Of Special Interest Payments To Meet Covenants

+ References

No definition available.

+ Details

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- Definition

Debt Instrument, Debt Default, Period Of Special Interest Payments To Meet Covenants, Maximum Interest Rate

+ References

No definition available.

+ Details

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- Definition

Debt Instrument, Debt Default, Period When Payment Due Of Special Interest

+ References

No definition available.

+ Details

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- Definition

Debt Instrument, Debt Default, Written Notice Period

+ References

No definition available.

+ Details

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- Definition

Payments To Fund Equity Transactions

+ References

No definition available.

+ Details

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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28551-108399

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-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

+ Details

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Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ 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 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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- Definition

The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3255-108585

+ Details

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- 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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- Details

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