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Long-Term Debt (Schedule Of Aggregate Maturities For Debt Outstanding) (Details) - USD ($)
$ in Thousands
Apr. 30, 2019
Jul. 31, 2018
Apr. 30, 2018
Debt Instrument [Line Items]      
2019 (May 2019 through July 2019) $ 12,046    
2020 54,666    
2021 48,580    
2022 48,648    
2023 48,719    
Thereafter 1,150,752    
Total debt $ 1,363,411 $ 1,276,082 $ 1,119,986