Revenue, Receivables and Contract Assets and Liabilities (Details 5) $ in Thousands	Sep. 01, 2018 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-06-02
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Total	$ 462,097
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-06-02
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Total	222,677
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-06-02
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Total	10,313
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: (nil)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Total	$ 695,087