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Subsequent Events - Additional Information (Narrative) (Details) - Subsequent Event [Member] - $ / shares
Aug. 27, 2020
Aug. 13, 2020
Jul. 30, 2020
Subsequent Events [Line Items]      
Date of announcement of dividend     Jul. 30, 2020
Date of payment of dividend Aug. 27, 2020    
Date of record of dividend   Aug. 13, 2020  
Class A Stock      
Subsequent Events [Line Items]      
Quarterly dividend payable amount per share     $ 0.12
Class B Stock      
Subsequent Events [Line Items]      
Quarterly dividend payable amount per share     $ 0.12