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Net Income Per Share (Schedule of Debt Conversions) (Details) - Convertible Debt - $ / shares
Oct. 02, 2020
May 31, 2020
Feb. 29, 2020
Oct. 04, 2019
2.5% Convertible Senior Notes due April 1, 2022        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Conversion price (in dollars per share)       $ 16.77
Stated interest rate     2.50% 2.50%
2.0% Convertible Senior Notes due August 15, 2022        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Conversion price (in dollars per share) $ 10.23 $ 19.25   $ 20.41
Stated interest rate 2.00% 2.00% 2.00%  
New 2.5% Convertible Senior Notes due April 1, 2022        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Conversion price (in dollars per share) $ 16.77      
Stated interest rate 2.50%      
New 2.0% Convertible Senior Notes due August 15, 2022        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Conversion price (in dollars per share) $ 20.41      
Stated interest rate 2.00%