Subsequent Events - Sixth Street Financing Agreement (Details) - Senior secured debt		6 Months Ended
Aug. 10, 2020 USD ($) quarter	Jun. 30, 2021 USD ($)
Subsequent Event \| Sixth Street Financing Agreement
Liability For Sale of Future Royalties [Line Items]
Credit facility capacity	$ 500,000,000
LIBOR rate floor (precent)	1.00%
Company option for percentage of interest payable in kind (percent)	4.00%
Number of fiscal quarters for Company option for interest payable in kind \| quarter	8
Debt covenant, minimum unrestricted cash balance	$ 50,000,000
Net sales for four consecutive quarters to waive minimum unrestricted cash balance requirement	$ 400,000,000
Subsequent Event \| Sixth Street Financing Agreement \| LIBOR
Liability For Sale of Future Royalties [Line Items]
Basis spread on variable rate (percent)	9.00%
Subsequent Event \| Sixth Street Financing - term loan
Liability For Sale of Future Royalties [Line Items]
Principal amount	$ 275,000,000
Net proceeds from term loan	260,000,000
Subsequent Event \| Sixth Street Financing - delayed draw term loans
Liability For Sale of Future Royalties [Line Items]
Principal amount	225,000,000
Subsequent Event \| Sixth Street Financing - delayed draw term loans \| Currently available
Liability For Sale of Future Royalties [Line Items]
Principal amount	$ 100,000,000
Forecast \| Sixth Street Financing Agreement
Liability For Sale of Future Royalties [Line Items]
Debt covenant, minimum unrestricted cash balance		$ 80,000,000
Forecast \| Sixth Street Financing - delayed draw term loans \| Available in first and second quarter 2021
Liability For Sale of Future Royalties [Line Items]
Principal amount		125,000,000
Net sales minimum threshold for delayed draws		$ 45,000,000

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Debt Instrument, Company Election Option For Percentage Of Interest Payable In Kind

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Debt Instrument, Delayed Draw Net Sales Threshold, Quarterly, Minimum

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Debt Instrument, LIBOR Rate Floor, Percentage

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

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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.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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The cash inflow from amounts received from issuance of long-term debt that is wholly or partially secured by collateral. Excludes proceeds from tax exempt secured debt.

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