Convertible Notes - Summary of Convertible Debt (Details) - Convertible Debt - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Convertible note, debt balance	$ 280,000	$ 185,100
Debt issuance cost	(7,492)	(5,733)
Convertible notes, net	$ 272,508	179,367
Cumulative Effect, Period of Adoption, Adjustment
Debt Instrument [Line Items]
Convertible note, debt balance		94,900
Debt issuance cost		(2,973)
Convertible notes, net		91,927
Cumulative Effect, Period of Adoption, Adjusted Balance
Debt Instrument [Line Items]
Convertible note, debt balance		280,000
Debt issuance cost		(8,706)
Convertible notes, net		$ 271,294

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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-Publisher FASB
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