Investments in Unconsolidated Affiliates and Variable Interest Entities - Schedule of Raw Material Purchases under Supply Agreement (Details) - USD ($) $ in Thousands	6 Months Ended
	Dec. 27, 2020	Dec. 29, 2019
UNF America [Member]
Schedule Of Equity Method Investments [Line Items]
Raw material purchases under supply agreement	$ 8,005	$ 8,582
UNF [Member]
Schedule Of Equity Method Investments [Line Items]
Raw material purchases under supply agreement	207	1,209
UNF and UNF America [Member]
Schedule Of Equity Method Investments [Line Items]
Raw material purchases under supply agreement	$ 8,212	$ 9,791