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Notes Payable and Long-Term Debt - Schedule of Long-Term Debt Payable (Details)
$ in Thousands
Aug. 31, 2017
USD ($)
Debt Disclosure [Abstract]  
Long-term Debt, Repayments in 2018 $ 149,050
Long-term Debt, Repayments in 2019 167,412
Long-term Debt, Repayments in 2020 31,478
Long-term Debt, Repayments in 2021 182,949
Long-term Debt, Repayments in 2022 126
Long-term Debt, Repayments after 2022 1,611,385
Total long-term debt $ 2,142,400