XML 58 R44.htm IDEA: XBRL DOCUMENT v3.22.4
Convertible Senior Notes - 2024 Notes (Details) - USD ($)
Dec. 31, 2022
Dec. 31, 2021
May 02, 2017
Debt Instrument [Line Items]      
Net Carrying Amount $ 169,400,000 $ 0  
Net Carrying Amount 0 335,100,000  
2.25% Convertible senior notes due 2024      
Debt Instrument [Line Items]      
Principal Amount 170,400,000 381,200,000 $ 517,500,000
Unamortized Debt, Discount 0 (43,200,000)  
Unamortized Debt, Issuance Costs (1,000,000.0) (2,900,000)  
Net Carrying Amount 169,400,000    
Net Carrying Amount   335,100,000  
Fair Value, Amount $ 268,000,000.0 $ 464,700,000