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Subsequent Events	6 Months Ended
Subsequent Events	Jul. 31, 2021
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On August 19, 2021, the Company's Board of Directors authorized and declared a quarterly cash dividend in the amount of $0.4375 per share on the Company's common stock and Class B common stock. The dividend is payable on September 24, 2021 to stockholders of record as of the close of business on September 10, 2021. Also on August 19, 2021, the Company's Board of Directors authorized and declared a special dividend in the amount of $5.50 per share on the Company's common stock and Class B common stock. The dividend is payable on September 24, 2021 to stockholders of record at the close of business on September 10, 2021.