Convertible Senior Notes and Capped Call Transactions - Narrative (Details)		6 Months Ended
	May 11, 2020 USD ($)	Jun. 30, 2022 USD ($) $ / shares	Jan. 01, 2022 USD ($)	Dec. 31, 2021 USD ($)
Debt Instrument [Line Items]
Accumulated deficit		$ (504,009,000)		$ (427,603,000)
Additional paid-in capital		$ 1,038,250,000		1,018,005,000
Cap price (in dollars per share) | $ / shares		$ 47.24
Cumulative Effect, Period of Adoption, Adjustment
Debt Instrument [Line Items]
Accumulated deficit			$ 8,647,000
Additional paid-in capital			(30,794,000)
Liabilities			$ 22,147,000
2025 Senior Notes
Debt Instrument [Line Items]
Fair value of the notes		$ 296,326,000
Convertible Debt
Debt Instrument [Line Items]
Purchases of capped calls	$ 29,348,000
Convertible Debt | 2025 Senior Notes
Debt Instrument [Line Items]
Principal	253,000
Proceeds from issuance of convertible senior notes, net of issuance costs	$ 245,158,000
Interest rate, stated percentage	1.25%
Debt instrument, convertible, conversion ratio		0.0325668
Initial conversion price (in dollars per share) | $ / shares		$ 30.71
Carrying amount of equity component				31,779,000
Debt issuance costs of liability component				$ 6,857,000
Interest rate, effective percentage			1.87%	4.51%
Convertible Debt | 2025 Senior Notes | Additional paid-in capital
Debt Instrument [Line Items]
Debt issuance costs of equity component				$ 985,000