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Debt Maturities (Details)
$ in Thousands
Apr. 30, 2020
USD ($)
Debt Disclosure [Abstract]  
Long-term Debt, Maturities, Repayments of Principal, Remainder of Fiscal Year $ 0
Long-term Debt, Maturities, Repayments of Principal in Year Two 0
Long-term Debt, Maturities, Repayments of Principal in Year Three 50,000
Long-term Debt, Maturities, Repayments of Principal in Year Four 364
Long-term Debt, Maturities, Repayments of Principal in Year Five 0
Long-term Debt, Maturities, Repayments of Principal after Year Five $ 0