Revenue, Receivables and Contract Assets and Liabilities (Details 2) - USD ($) $ in Thousands	Sep. 01, 2018	Mar. 03, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total receivables	$ 202,501	$ 213,382
Less: allowance for doubtful accounts	(1,731)	(1,530)
Net receivables	200,770	211,852
Trade accounts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total receivables	153,220	157,562
Construction contracts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total receivables	17,462	26,545
Construction contracts - retainage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total receivables	31,819	26,388
Other receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total receivables	$ 0	$ 2,887