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Subsequent Events	3 Months Ended
Subsequent Events	Oct. 31, 2019
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On November 19, 2019, the Board of Directors declared a quarterly cash dividend to shareholders of the Company’s Class A and Class B Common Stock of $0.2175 per share payable on January 31, 2020, to shareholders of record at the close of business on January 10, 2020.