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Earnings Per Share (Limited Duration Stockholder Rights Agreement) (Details) - $ / shares
1 Months Ended
Mar. 24, 2020
Mar. 31, 2020
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]    
Preferred stock dividend (in shares)   1
Preferred share purchase right, percent of common stock acquired, initial trigger 10.00%  
Preferred share purchase right, percent of common stock acquired, BOD option trigger 50.00%  
Junior Participating Preferred Stock    
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]    
Share price (in dollars per share) $ 50  
Number of share purchase rights per share   $ 0.001
Board of directors | Junior Participating Preferred Stock    
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]    
Number of share purchase rights per share 1  
Redemption price per share (in dollars per share) $ 0.01