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Shareholders' Equity (Preferred Stock) (Details) - $ / shares
Dec. 31, 2019
Dec. 31, 2018
Stockholders' Equity Note [Abstract]    
Preferred stock, shares authorized 5,000,000.0 5,000,000
Preferred stock, par value $ 0.01 $ 0.01
Preferred stock, shares issued 0 0
Preferred stock, shares outstanding 0