Revenue, Receivables and Contract Assets and Liabilities (Details 2) - USD ($) $ in Thousands	Mar. 02, 2019	Jun. 02, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total receivables	$ 213,382	$ 186,932
Less: allowance for doubtful accounts	(1,530)	(1,389)
Net receivables	211,852	185,543
Trade accounts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total receivables	157,562	143,572
Construction contracts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total receivables	26,545	15,436
Construction contracts - retainage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total receivables	26,388	27,924
Other receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total receivables	$ 2,887	$ 0