XML 88 R68.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Debt - 2026 Convertible Notes (Details)
1 Months Ended 12 Months Ended
Dec. 31, 2019
USD ($)
$ / shares
Sep. 30, 2019
USD ($)
day
Aug. 31, 2015
USD ($)
day
$ / shares
Dec. 31, 2019
USD ($)
$ / shares
Dec. 31, 2018
USD ($)
Long-term debt          
Debt instrument additional mount available for repurchase       $ 37,500,000  
Equity component of convertible notes, net       119,482,000  
Convertible debt | Convertible Senior Notes, 1.5%, Due September 15, 2026          
Long-term debt          
Debt instrument $ 287,500,000 $ 287,500,000   $ 287,500,000  
Interest rate 1.50% 1.50%   1.50%  
Net proceeds from issuance of convertible notes       $ 279,300,000  
Conversion ratio   19.0404      
Conversion price per share | $ / shares $ 52.52     $ 52.52  
Equity component of convertible notes, net   $ 123,000,000.0      
Net deferred tax liability in connection with convertible notes $ 25,300,000     $ 25,300,000  
Term of the convertible notes 6 years 8 months 12 days        
Convertible debt | 3.00% Convertible senior notes due 2022          
Long-term debt          
Debt instrument $ 150,000,000   $ 150,000,000.0 $ 150,000,000 $ 150,000,000
Interest rate     3.00%    
Net proceeds from issuance of convertible notes     $ 145,400,000    
Consecutive trading days, period | day     30    
Stock price trigger   130.00% 130.00%    
Trading days, number | day   20 20    
Business days, period   5 days 5 days    
Consecutive trading-day period   5 days 5 days    
Maximum product of the closing sale price of shares of the Company's common stock and the applicable conversion rate for such trading day 98.00%   98.00% 98.00%  
Conversion ratio     17.7487    
Conversion price per share | $ / shares     $ 56.34    
Convertible instruments principal and unpaid interest payable upon events of default   100.00% 100.00%    
Minimum percentage of principal held by convertible debt instrument holders required to issue notice for declaration of principal and unpaid interest payable upon events of default   25.00% 25.00%    
Net deferred tax liability in connection with convertible notes     $ 22,300,000    
Term of the convertible notes     7 years    
Convertible debt | 3.00% Convertible senior notes due 2022 | Redemption on or after August 20, 2018          
Long-term debt          
Consecutive trading days, period | day   30 30    
Stock price trigger   130.00% 130.00%    
Trading days, number | day   19 19    
Redemption price   100.00% 100.00%    
Debt instrument, cumulative sinking fund payments $ 0     $ 0