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Long-Term Debt - Canadian Revolving Credit Facility (Details) - Canadian Facility
$ in Millions, $ in Millions
Jul. 31, 2021
USD ($)
Jul. 31, 2021
CAD ($)
Long-term debt    
Maximum amount under the facility $ 24.0 $ 30.0
Available borrowings under the facility $ 19.1  
Borrowing interest rate (as a percent) 2.83% 2.83%