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CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY - USD ($)
$ in Millions
Total
Cumulative Effect, Period of Adoption, Adjustment
Common Stock
Additional Paid-in Capital
Additional Paid-in Capital
Cumulative Effect, Period of Adoption, Adjustment
Accumulated (Deficit) Earnings
Accumulated (Deficit) Earnings
Cumulative Effect, Period of Adoption, Adjustment
Accumulated Other Comprehensive (Loss) Income
Beginning balance (in shares) at Dec. 31, 2021     69,179,000          
Beginning balance at Dec. 31, 2021 $ 556.3   $ 0.1 $ 1,207.9   $ (649.5)   $ (2.2)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Exercise of options to purchase common stock (in shares)     147,000          
Exercise of options to purchase common stock 6.9     6.9        
Issuance of shares for employee stock purchase plan (in shares)     53,000          
Issuance of shares for employee stock purchase plan 9.4     9.4        
Stock-based compensation expense 40.9     40.9        
Restricted stock units vested, net of shares withheld for taxes (in shares)     132,000          
Restricted stock units vested, net of shares withheld for taxes (16.8)     (16.8)        
Net income 4.6         4.6    
Other comprehensive income 22.2             22.2
Ending balance (in shares) at Dec. 31, 2022     69,511,000          
Ending balance at Dec. 31, 2022 $ 476.4 $ (147.1) $ 0.1 1,040.6 $ (207.7) (584.3) $ 60.6 20.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Accounting Standards Update [Extensible Enumeration] Accounting Standards Update 2020-06              
Exercise of options to purchase common stock (in shares)     249,000          
Exercise of options to purchase common stock $ 16.3     16.3        
Issuance of shares for employee stock purchase plan (in shares)     55,000          
Issuance of shares for employee stock purchase plan 10.6     10.6        
Stock-based compensation expense 48.3     48.3        
Restricted stock units vested, net of shares withheld for taxes (in shares)     92,000          
Restricted stock units vested, net of shares withheld for taxes (13.2)     (13.2)        
Net income 206.3         206.3    
Other comprehensive income $ (12.0)             (12.0)
Ending balance (in shares) at Dec. 31, 2023 69,907,289   69,907,000          
Ending balance at Dec. 31, 2023 $ 732.7   $ 0.1 1,102.6   (378.0)   8.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Exercise of options to purchase common stock (in shares) 127,125   127,000          
Exercise of options to purchase common stock $ 8.2     8.2        
Issuance of shares for employee stock purchase plan (in shares)     78,000          
Issuance of shares for employee stock purchase plan 11.9     11.9        
Stock-based compensation expense 69.3     69.3        
Restricted stock units vested, net of shares withheld for taxes (in shares)     84,000          
Restricted stock units vested, net of shares withheld for taxes (7.6)     (7.6)        
Net income 418.3         418.3    
Other comprehensive income $ (21.2)             (21.2)
Ending balance (in shares) at Dec. 31, 2024 70,196,031   70,196,000          
Ending balance at Dec. 31, 2024 $ 1,211.6   $ 0.1 $ 1,184.4   $ 40.3   $ (13.2)