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Convertible Senior Notes and Related Transactions - Narrative (Details)
$ / shares in Units, shares in Millions
1 Months Ended 12 Months Ended
Dec. 07, 2021
$ / shares
May 01, 2019
$ / shares
Apr. 30, 2019
USD ($)
$ / shares
shares
Jan. 29, 2022
USD ($)
$ / shares
shares
Jan. 30, 2021
USD ($)
Feb. 01, 2020
USD ($)
Debt Instrument [Line Items]            
Amortization of debt discount       $ 11,125,000 $ 10,394,000 $ 7,558,000
Amortization of debt issuance costs       $ 1,390,000 1,351,000 919,000
Option to purchase, number of shares (in shares) | shares     11.6      
Conversion price (in dollars per share) | $ / shares $ 25.66 $ 46.88 $ 25.78 $ 25.78    
Convertible note hedge cost     $ 61,000,000      
Warrants outstanding (in shares) | shares     11.6 11.6    
Strike price of warrants (in dollars per share) | $ / shares     $ 46.88 $ 46.88    
Proceeds from issuance of warrants     $ 28,100,000 $ 0 0 28,080,000
Convertible senior notes debt discount       6,207,000 8,776,000  
Convertible senior notes hedge transactions       6,884,000 9,697,000  
2.00% Convertible Senior Notes Due 2024 | Senior notes            
Debt Instrument [Line Items]            
Interest rate (as a percent)     2.00%      
Convertible debt issued     $ 300,000,000      
Conversion ratio     0.0387879      
Conversion price (in dollars per share) | $ / shares     $ 25.78      
Percentage of principal and interest of the Notes that the Company may be required to purchase in the event of a fundamental change     100.00%      
Minimum percentage of holders of the Notes which may be able to declare the Notes to be due and payable upon the occurrence of certain events of default     25.00%      
Percentage of principal and interest that may be declared due and payable upon the occurrence of certain events of default     100.00%      
Effective interest rate     6.80%      
Amortization of debt discount       11,100,000 10,400,000 7,600,000
Amortization of debt issuance costs       900,000 900,000 $ 700,000
2.00% Convertible Senior Notes Due 2024 | Senior notes | Level 2            
Debt Instrument [Line Items]            
Fair value of convertible senior notes       $ 303,100,000 $ 303,500,000  
2.00% Convertible Senior Notes Due 2024 | Senior notes | Initial purchasers            
Debt Instrument [Line Items]            
Debt issuance costs     $ 3,800,000      
2.00% Convertible Senior Notes Due 2024 | Senior notes | Third party offerers            
Debt Instrument [Line Items]            
Debt issuance costs     $ 1,500,000