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Debt - Additional Information (Details)			1 Months Ended		3 Months Ended	9 Months Ended
Debt - Additional Information (Details)	Jul. 26, 2021 USD ($)	Nov. 27, 2017	Jun. 30, 2021 USD ($) $ / shares shares	Jan. 31, 2021 USD ($) $ / shares shares	Oct. 31, 2021 USD ($) $ / shares	Oct. 31, 2021 USD ($) TradingDay $ / shares shares
Interest Rate Swap
Debt Instrument [Line Items]
Derivative, effective date						Sep. 05, 2019
Derivative, maturity period						5 years
Derivative, notional value					$ 30,000,000.0	$ 30,000,000.0
Convertible Senior Notes \| 0.00% Convertible Senior Notes Due January 15, 2026
Debt Instrument [Line Items]
Aggregate principal amount				$ 345,000,000.0	$ 345,000,000	$ 345,000,000
Debt instrument interest rate stated percentage				0.00%
Debt instrument due date				Jan. 15, 2026
Principal amount of notes used in conversion rate				$ 1,000
Conversion rate per $1,000 principal amount of notes \| shares				38.7665
Conversion price per share of common stock \| $ / shares				$ 25.80
Debt instrument, convertible, latest date						Oct. 15, 2025
Debt instrument, effective interest rate					0.56%	0.56%
Interest expense, debt					$ 500,000	$ 1,400,000
Strike price \| $ / shares					25.80	25.80
Initial cap prices \| $ / shares					35.58	35.58
Common stock shares covered under capped call transactions \| shares						13,400,000
Cost of purchased capped calls						$ 27,800,000
Total debt outstanding with carrying amount				$ 267,614,000	$ 336,993,000	$ 336,993,000
Convertible Senior Notes \| 0.00% Convertible Senior Notes Due January 15, 2026 \| Debt Instrument, Redemption, Period On or After January 20, 2024
Debt Instrument [Line Items]
Debt instrument, convertible, threshold trading days \| TradingDay						20
Debt instrument, convertible, threshold consecutive trading days \| TradingDay						30
Debt instrument, convertible, threshold percentage of stock price trigger						130.00%
Debt instrument, redemption period, start date						Jan. 20, 2024
Debt instrument, redemption price, percentage of principal amount redeemed						100.00%
Convertible Senior Notes \| 0.00% Convertible Senior Notes Due January 15, 2026 \| Debt Instrument, Convertible, Terms of Conversion Feature, Circumstances One
Debt Instrument [Line Items]
Debt instrument, convertible, threshold trading days \| TradingDay						20
Debt instrument, convertible, threshold consecutive trading days \| TradingDay						30
Debt instrument, convertible, threshold percentage of stock price trigger						130.00%
Convertible Senior Notes \| 0.00% Convertible Senior Notes Due January 15, 2026 \| Debt Instrument, Convertible, Terms of Conversion Feature, Circumstances Two
Debt Instrument [Line Items]
Debt instrument, convertible, threshold consecutive trading days \| TradingDay						5
Debt instrument, convertible, threshold maximum percentage of product of last reported sale price of common stock						98.00%
Convertible Senior Notes \| Tender Offer \| 0.00% Convertible Senior Notes Due January 15, 2026
Debt Instrument [Line Items]
Principal amount of notes used in conversion rate			$ 1,000
Conversion rate per $1,000 principal amount of notes \| shares			38.7962
Conversion price per share of common stock \| $ / shares			$ 25.78
Secured Debt \| November 2017 Facility \| Wells Fargo Bank
Debt Instrument [Line Items]
Debt instrument due date	Jul. 26, 2024
Secured Debt \| November 2017 Facility \| Revolving Credit Facility \| Wells Fargo Bank
Debt Instrument [Line Items]
Line of credit facility, termination date		Nov. 27, 2017
Line of credit facility, maximum borrowing capacity	$ 65,000,000.0
Total debt outstanding with carrying amount				$ 30,000,000.0	$ 30,000,000.0	$ 30,000,000.0
Secured Debt \| November 2017 Facility \| Letters of Credit \| Wells Fargo Bank
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity sublimit	$ 45,000,000.0
Secured Debt \| November 2017 Facility \| Minimum \| Revolving Credit Facility \| Wells Fargo Bank \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Line of credit facility, floating interest rate						1.15%
Secured Debt \| November 2017 Facility \| Maximum \| Revolving Credit Facility \| Wells Fargo Bank \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Line of credit facility, floating interest rate						1.65%