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Financing Arrangements - Convertible Senior Notes (Details)
1 Months Ended 12 Months Ended
May 04, 2020
May 31, 2020
USD ($)
day
$ / shares
Dec. 31, 2021
USD ($)
$ / shares
Dec. 31, 2020
USD ($)
Debt Instrument [Line Items]        
Long-term debt     $ 1,044,335,000 $ 665,289,000
Convertible Notes        
Debt Instrument [Line Items]        
Debt instrument, face amount   $ 258,750,000    
Interest Rate   2.75%    
Convertible Notes        
Debt Instrument [Line Items]        
Debt instrument, convertible, remaining discount amortization period     4 years 3 months 18 days  
Debt instrument, convertible, beneficial conversion feature     $ 76,508,000  
Debt instrument, payment for capped call transactions   $ 31,775,000    
Debt instrument, capped call transaction cap price (in dollars per share) | $ / shares   $ 27.10    
Share price (in dollars per share) | $ / shares     $ 30.26  
Convertible Notes | Senior Notes        
Debt Instrument [Line Items]        
Interest Rate   2.75%    
Debt issuance costs, net     $ 8,527,000  
Debt instrument, convertible, conversion price, percentage   130.00%    
Debt instrument, convertible, threshold trading days | day   20    
Debt instrument, convertible, threshold consecutive trading days | day   30    
Debt instrument, convertible, consecutive trading day period   10 days    
Debt instrument, convertible, percentage of closing price per share   98.00%    
Debt instrument, convertible, conversion ratio 0.0567698      
Debt instrument, convertible, conversion price (in dollars per share) | $ / shares     $ 17.62  
Debt instrument, redemption, consecutive trading day period prior to maturity | day   40    
Debt instrument, redemption price, percentage   130.00%    
Debt instrument, redemption, threshold trading days | day   20    
Debt instrument, redemption, threshold consecutive trading days | day   30    
Convertible Senior Notes, Liability Component        
Debt Instrument [Line Items]        
Long-term debt     $ 194,470,000 $ 183,126,000
Convertible Senior Notes, Liability Component | Senior Notes        
Debt Instrument [Line Items]        
Debt issuance costs, net     6,006,000  
Convertible Senior Notes, Equity Component        
Debt Instrument [Line Items]        
Debt instrument, unamortized discount     59,602,000  
Convertible Senior Notes, Equity Component | Senior Notes        
Debt Instrument [Line Items]        
Debt issuance costs, net     $ 2,521,000