Debt - Interest Expense of Convertible Notes (Details) - Convertible Senior Notes - Convertible Senior Notes Due 2024 - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Debt Instrument [Line Items]
Stated interest	$ 1,186	$ 1,186	$ 3,558	$ 3,558
Amortized debt discount	0	5,915	0	17,091
Amortized issuance costs	458	251	1,357	725
Interest expense	$ 1,644	$ 7,352	$ 4,915	$ 21,374

Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense.

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Amount of amortization expense attributable to debt issuance costs.

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Amount of the cost of borrowed funds accounted for as interest expense for debt.

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