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Long-Term Debt (Schedule Of Aggregate Maturities For Debt Outstanding) (Details) - USD ($)
$ in Thousands
Jan. 31, 2020
Jul. 31, 2019
Jan. 31, 2019
Debt Instrument [Line Items]      
2020 (February 2020 through July 2020) $ 37,998    
2021 63,640    
2022 115,383    
2023 63,736    
2024 63,794    
Thereafter 1,522,015    
Total debt $ 1,866,566 $ 1,580,130 $ 1,397,645