XML 132 R36.htm IDEA: XBRL DOCUMENT v3.22.1
Convertible Senior Notes - Additional Information (Detail)
 1 Months Ended 3 Months Ended
Dec. 31, 2021
USD ($)
May 02, 2017
USD ($)
d
$ / shares
Nov. 30, 2020
USD ($)
Mar. 31, 2022
USD ($)
$ / shares
Debt Instrument [Line Items]        
Accounting Standards Update [Extensible List] Accounting Standards Update 2020-06      
Convertible senior notes $ 335,100,000     $ 377,700,000
Accumulated deficit (635,800,000)     (547,400,000)
Cumulative Effect, Period of Adoption, Adjustment | Accounting Standards Update 2020-06        
Debt Instrument [Line Items]        
Convertible senior notes 42,200,000      
Deferred tax liabilities 9,900,000      
Additional Paid in Capital 106,800,000      
Accumulated deficit 74,500,000      
2.25% Convertible senior notes due 2024        
Debt Instrument [Line Items]        
Principal Amount 381,200,000 $ 517,500,000   381,200,000
Interest rate percentage   2.25%    
Carrying amount of the liability component upon issuance   $ 368,300,000    
Convertible senior note assumed borrowing rate   7.50%    
Convertible senior note carrying value of the equity component   $ 149,200,000    
Convertible senior notes term   7 years    
Transaction cost related to issuance of convertible senior notes   $ 14,700,000    
Aggregate principal amount repurchased     $ 136,200,000  
Aggregate repurchase price paid in cash     186,900,000  
Fair value of the liability component immediately before extinguishment     130,700,000  
Equity component of repurchased convertible senior notes     56,300,000  
Carrying amount of the liability component at settlement     112,400,000  
Loss on extinguishment of convertible senior notes     $ 18,400,000  
Convertible senior notes $ 335,100,000     $ 377,700,000
Convertible senior notes convertible in to shares   0.0131711    
Convertible senior notes conversion price (in USD per share) | $ / shares   $ 75.92    
Convertible senior note premium   42.50%    
Market price of common stock (in USD per share) | $ / shares   $ 53.28    
Convertible senior notes redemption rate   100.00%    
2.25% Convertible senior notes due 2024 | Conversion Period One [Member]        
Debt Instrument [Line Items]        
Threshold consecutive common stock trading days | d   30    
Threshold percentage of common stock price trigger   130.00%    
Common stock price trigger (in USD per share) | $ / shares       $ 98.70
Threshold common stock trading days | d   20    
2.25% Convertible senior notes due 2024 | Conversion Period Two [Member]        
Debt Instrument [Line Items]        
Principal amount on conversion rate   $ 1,000    
Threshold common stock trading days | d   5    
Minimum percentage of common stock price trigger   98.00%    
2.25% Convertible senior notes due 2024 | Measurement Input, Discount Rate        
Debt Instrument [Line Items]        
Discount rate     0.0337