Revenue, Receivables and Contract Assets and Liabilities (Details 2) - USD ($) $ in Thousands	Mar. 02, 2019	Mar. 03, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total receivables	$ 197,139	$ 213,382
Less: allowance for doubtful accounts	(4,372)	(1,530)
Net receivables	192,767	211,852
Trade accounts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total receivables	145,693	157,562
Construction contracts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total receivables	19,050	26,545
Contract retainage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total receivables	32,396	26,388
Other receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total receivables	$ 0	$ 2,887