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G&K Services, Inc. Integration Expenses (Details) - USD ($)
$ in Thousands
3 Months Ended
Aug. 31, 2019
Aug. 31, 2018
May 31, 2019
Business Acquisition [Line Items]      
Integration related costs $ 0 $ 4,850  
G&K Services      
Business Acquisition [Line Items]      
Integration related costs 0 4,900  
Accrued employee termination benefits 2,700   $ 2,800
Payments for employee termination benefits $ 100 $ 2,400