Debt - Narrative (Details) $ / shares in Units, shares in Millions			3 Months Ended		12 Months Ended
	Jan. 11, 2021 USD ($) day $ / shares Rate shares	May 04, 2020 USD ($) day $ / shares Rate	Dec. 31, 2021 day Rate	Sep. 30, 2021 day	Dec. 31, 2021 USD ($) Rate	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2021	Dec. 31, 2021 $ / shares
Line of Credit Facility [Line Items]
Issuance of common stock, net					$ 15,080,000	$ 20,310,000	$ 11,202,000
Ownership of convertible notes (as a percent)		25.00%
Proceeds from issuance of convertible debt, net of issuance costs					$ 334,410,000	194,466,000	$ 0
Debt issuance costs								$ (714,000)
Over-Allotment Option
Line of Credit Facility [Line Items]
Issuance of common stock, net	$ 334,400,000	$ 194,500,000
Capped Call Transactions
Line of Credit Facility [Line Items]
Proceeds from issuance of convertible debt, net of issuance costs	$ 29,300,000
Capped call transaction, number of underlying shares | shares	5.2
Offering price per share (in dollars per share) | $ / shares	$ 85.75
Premium on offering price (as a percent)	75.00%
Public offering price (in dollars per share) | $ / shares	$ 49.00
0.25% Convertible Senior Notes | Convertible Debt
Line of Credit Facility [Line Items]
Stated interest rate (as a percent)	0.25%		0.25%		0.25%				0.25%
Debt instrument, face amount	$ 345,000,000
Discount on principal amount (as a percent) | Rate	97.00%
Discount on shares	$ 10,600,000
Threshold trading days | day	20
Consecutive trading days | day	30
Conversion price on applicable trading day (as a percent)	130.00%
Convertible Notes, conversion ratio | Rate	1.51172%
Convertible Notes, conversion price (in dollars per share) | $ / shares	$ 66.15									$ 34.12
Redemption price of principal (as a percent)	100.00%
Ownership of convertible notes (as a percent)	25.00%
Interest expense, contractual coupon interest					$ 800,000
Interest expense, accretion of debt discount					1,400,000
Interest expense, amortization of debt issuance costs					$ 32,000
Effective interest rate on Convertible Notes (as a percent)					0.70%
Debt issuance costs						0		(208,000)
0.25% Convertible Senior Notes | Convertible Debt | Level 2
Line of Credit Facility [Line Items]
Fair value of debt								297,600,000
0.25% Convertible Senior Notes | Convertible Debt | Debt Instrument, Redemption, Period One
Line of Credit Facility [Line Items]
Threshold trading days | day	20
Consecutive trading days | day	30
Conversion price on applicable trading day (as a percent)	130.00%
0.25% Convertible Senior Notes | Convertible Debt | Debt Instrument, Redemption, Period Two
Line of Credit Facility [Line Items]
Threshold trading days | day	5
Consecutive trading days | day	5
Principal amount priced to investors (as a percent) | Rate	98.00%
1.25% Convertible Senior Notes | Convertible Debt
Line of Credit Facility [Line Items]
Stated interest rate (as a percent)		1.25%	1.25%		1.25%				1.25%
Debt instrument, face amount		$ 201,300,000
Discount on principal amount (as a percent) | Rate		97.00%
Discount on shares		$ 6,900,000
Threshold trading days | day		20
Consecutive trading days | day		30
Conversion price on applicable trading day (as a percent)		130.00%
Convertible Notes, conversion ratio | Rate		2.75198%
Convertible Notes, conversion price (in dollars per share) | $ / shares		$ 36.34								$ 34.12
Redemption price of principal (as a percent)		100.00%
Interest expense, contractual coupon interest					$ 2,500,000	1,700,000
Interest expense, accretion of debt discount					1,200,000	4,400,000
Interest expense, amortization of debt issuance costs					$ 150,000	70,000.00
Effective interest rate on Convertible Notes (as a percent)					1.96%
Debt issuance costs						(538,000)		(506,000)
1.25% Convertible Senior Notes | Convertible Debt | Level 2
Line of Credit Facility [Line Items]
Fair value of debt						$ 320,900,000		$ 238,900,000
1.25% Convertible Senior Notes | Convertible Debt | Debt Instrument, Redemption, Period One
Line of Credit Facility [Line Items]
Threshold trading days | day		20	20	20
Consecutive trading days | day		30	30	30
Conversion price on applicable trading day (as a percent)		130.00%	130.00%	130.00%
1.25% Convertible Senior Notes | Convertible Debt | Debt Instrument, Redemption, Period Two
Line of Credit Facility [Line Items]
Threshold trading days | day		5
Consecutive trading days | day		5
Principal amount priced to investors (as a percent) | Rate		98.00%