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Balance Type:
Period Type:

Debt - Narrative (Details)			1 Months Ended		12 Months Ended
Debt - Narrative (Details)	Jul. 09, 2020 USD ($)	Apr. 22, 2020 USD ($)	Jun. 30, 2021 USD ($)	Mar. 31, 2021 USD ($) day $ / shares $ / item	Dec. 31, 2021 USD ($) $ / shares	Dec. 31, 2020 USD ($) $ / shares	Dec. 31, 2019 USD ($) $ / shares	Mar. 04, 2021 $ / shares	Dec. 31, 2018 $ / shares
Debt Instrument [Line Items]
Unamortized debt issuance costs					$ 4,007,000
Cap price (in USD per share) \| $ / item				45.5350
Premium over stock price (percent)				75.00%
Stock price (in dollars per share) \| $ / shares					$ 41.32	$ 24.11	$ 35.81	$ 26.02	$ 17.02
Capped-call transaction term, consecutive trading days \| day				40
Purchase of capped call				$ 16,100,000	$ 16,134,000	$ 0	$ 0
Payment of issuance costs of convertible notes					4,717,000	0	0
Amortization of debt issuance costs					710,000	0	0
Interest on convertible notes					2,514,000	0	0
Gain on extinguishment of PPP loan					7,185,000	$ 0	$ 0
Convertible Senior Notes Due 2026
Debt Instrument [Line Items]
Convertible debt, conversion ratio				0.0301427
Convertible Senior Notes Due 2026 \| Common Stock
Debt Instrument [Line Items]
Conversion price (in dollars per share) \| $ / shares				$ 33.18
Convertible Senior Notes Due 2026 \| Convertible Debt
Debt Instrument [Line Items]
Debt instrument, aggregate principal amount				$ 138,300,000
Debt instrument, interest rate				2.25%
Proceeds from convertible notes, net of unamortized debt issuance costs				$ 133,600,000
Unamortized debt issuance costs					4,007,000
Redemption price, percentage				100.00%
Required outstanding amount not subject to redemption				$ 50,000,000
Debt fair value					201,000,000
Payment of issuance costs of convertible notes					4,700,000
Amortization of debt issuance costs					$ 700,000
Effective interest rate during period					2.97%
Interest on convertible notes					$ 3,200,000
Convertible Senior Notes Due 2026 \| Convertible Debt \| Debt Instrument, Redemption, Period One
Debt Instrument [Line Items]
Redemption price, percentage				100.00%
Incremental repurchase amount				$ 1,000
Convertible Senior Notes Due 2026, Second Conversion Trigger \| Convertible Debt
Debt Instrument [Line Items]
Conversion threshold trading days \| day				5
Threshold consecutive trading days \| day				5
Conversion threshold percentage of stock price trigger				98.00%
Convertible Senior Notes Due 2026, First Conversion Trigger \| Convertible Debt
Debt Instrument [Line Items]
Conversion threshold trading days \| day				20
Threshold consecutive trading days \| day				30
Conversion threshold percentage of stock price trigger				130.00%
Paycheck Protection Program CARES Act
Debt Instrument [Line Items]
Debt instrument, interest rate		1.00%
Loan proceeds		$ 7,200,000
Gain on extinguishment of PPP loan			$ 7,200,000
Loan and Security Agreement \| Revolving Credit Facility \| Silicon Valley Bank
Debt Instrument [Line Items]
Debt instrument, interest rate	5.00%
Debt instrument term	4 years
Maximum borrowing capacity	$ 30,000,000
Qualifying accounts receivable	80.00%
Commitment fee amount	$ 300,000
Anniversary fee amount	300,000
Quarterly minimum revenue	$ 90,000,000
Loan and Security Agreement \| Revolving Credit Facility \| Silicon Valley Bank \| Prime Rate
Debt Instrument [Line Items]
Basis spread on variable rate	1.75%