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Convertible Senior Notes Due 2023 - Narrative (Details)
1 Months Ended 6 Months Ended 12 Months Ended
Mar. 31, 2018
day
$ / shares
Rate
shares
Jun. 30, 2022
USD ($)
$ / shares
Dec. 31, 2021
USD ($)
Jan. 01, 2022
USD ($)
Debt Instrument [Line Items]        
Strike price of the warrant transactions (in dollars per share) | $ / shares $ 80.91 $ 80.91    
Accounting Standards Update 2020-06        
Debt Instrument [Line Items]        
Long-term debt | $       $ 20,600,000
Convertible Debt        
Debt Instrument [Line Items]        
Interest rate 0.625%      
Principal amount of debt | $   $ 402,500,000 $ 402,500,000  
Conversion rate for the notes (in shares per $1,000 principal amount)   0.0168545    
Conversion price, per share of common stock (in dollars per share) | $ / shares $ 59.33 $ 59.33    
Convertible note hedge options issued (in shares) | shares 402,500      
Common stock issued upon conversion of notes (in shares) | shares 6,800,000      
Warrants issued (in shares) | shares 6,783,939      
Number of shares per warrant entitled to holder (in shares) | shares 1      
Long-term debt | $   $ 400,909,000 379,252,000  
Conversion of debt to equity | $   $ 0 $ 0  
Convertible Debt | Conversion Circumstance One        
Debt Instrument [Line Items]        
Threshold trading days (whether or not consecutive) | day 20      
Consecutive trading day period (in days) | day 30      
Conversion rate of the notes on trading day (as percent) 130.00%      
Conversion option stock price trigger (in dollars per share) | $ / shares $ 77.13      
Convertible Debt | Conversion Circumstance Two        
Debt Instrument [Line Items]        
Threshold trading days (whether or not consecutive) | day 5      
Consecutive trading day period (in days) | day 10      
Conversion rate of the notes on trading day (as percent) | Rate 98.00%