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DEBT - Schedule of Required Payments (Details) - USD ($)
$ in Thousands
Apr. 30, 2018
Apr. 30, 2017
Debt Instrument [Line Items]    
Total payments $ 509,919 $ 565,978
Mortgages [Member]    
Debt Instrument [Line Items]    
2019 25,002  
2020 114,520  
2021 92,182  
2022 70,509  
2023 27,497  
Thereafter 182,430  
Total payments $ 512,140