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Leases - Additional Information (Details)
12 Months Ended
May 31, 2021
USD ($)
Lessee Lease Description [Line Items]  
Operating lease, existence of option to extend true
Operating lease, existence of option to terminate true
Finance lease, existence of option to extend true
Finance lease, existence of option to terminate true
Short term lease expense $ 0
Sublease income $ 0
Maximum  
Lessee Lease Description [Line Items]  
Operating lease, remaining lease term 20 years
Finance lease, remaining lease term 20 years