Quarterly report pursuant to Section 13 or 15(d)

Long-term Debt - Summarized Terms of the Convertible Senior Notes (Details)

v3.21.2
Long-term Debt - Summarized Terms of the Convertible Senior Notes (Details)
$ / shares in Units, shares in Millions, equity_instrument in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2021
USD ($)
$ / shares
shares
Sep. 30, 2021
USD ($)
equity_instrument
$ / shares
Sep. 30, 2020
USD ($)
Debt Instrument [Line Items]      
Principal amount   $ 135,800,000 $ 0
2022 Convertible Senior Notes      
Debt Instrument [Line Items]      
Principal amount $ 136,000,000    
Common stock (in shares) | shares 5    
Convertible Senior Notes      
Debt Instrument [Line Items]      
Outstanding Principal Amount $ 158,000,000 158,000,000  
Convertible Senior Notes | 2022 Convertible Senior Notes      
Debt Instrument [Line Items]      
Outstanding Principal Amount $ 14,000,000 $ 14,000,000  
Stated Interest Rate 4.125% 4.125%  
Conversion Ratio   36.8088  
Conversion Price (in usd per share) | $ / shares $ 27.17 $ 27.17  
Issuable Shares | equity_instrument   0.5  
Dividend Threshold Amount (in usd per share) | $ / shares $ 0.33 $ 0.33  
Convertible Senior Notes | 2023 Convertible Senior Notes      
Debt Instrument [Line Items]      
Outstanding Principal Amount $ 144,000,000 $ 144,000,000  
Stated Interest Rate 0.00% 0.00%  
Conversion Ratio   20.6853  
Conversion Price (in usd per share) | $ / shares $ 48.34 $ 48.34  
Issuable Shares | equity_instrument   3.0  
Dividend Threshold Amount (in usd per share) | $ / shares $ 0.34 $ 0.34