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Organization, Basis of Presentation and Significant Accounting Policies - Recent Accounting Pronouncements (Details) - USD ($)
$ in Thousands
Feb. 29, 2020
Sep. 01, 2019
Accounting Policies [Abstract]    
Cumulative Effect of New Accounting Principle in Period of Adoption   $ 33,700
Operating Lease, Right-of-Use Asset $ 255,764 268,400
Operating Lease, Liability $ 257,082 $ 267,000