Common Shares Reserved for Issuance - Schedule of Reserved Shares of Common Stock for Issuance (Details) - shares shares in Thousands	Dec. 31, 2021	Dec. 31, 2020
Class of Stock [Line Items]
Shares reserved for future issuance (in shares)	101,801	99,275
Series A Convertible Preferred Stock
Class of Stock [Line Items]
Shares reserved for future issuance (in shares)	24,313	23,249
Convertible senior notes
Class of Stock [Line Items]
Shares reserved for future issuance (in shares)	33,856	33,856
Reserved under stock award plans
Class of Stock [Line Items]
Shares reserved for future issuance (in shares)	39,476	38,745
ESPP
Class of Stock [Line Items]
Shares reserved for future issuance (in shares)	4,156	3,425