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Organization, Basis of Presentation, and Summary of Significant Accounting Policies - Intangible Assets (Details) - Customer Relationships
9 Months Ended
Feb. 28, 2021
Minimum  
Finite-Lived Intangible Assets [Line Items]  
Useful life 11 years
Maximum  
Finite-Lived Intangible Assets [Line Items]  
Useful life 13 years