Revenue, Receivables and Contract Assets and Liabilities (Details 2) - USD ($) $ in Thousands	Feb. 26, 2022	Feb. 27, 2021	Feb. 29, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total receivables	$ 170,724	$ 177,864
Less: allowance for credit losses	2,132	1,947	$ 2,469
Receivables, net	168,592	175,917
Trade accounts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total receivables	129,085	120,534
Construction contracts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total receivables	12,857	12,163
Contract retainage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total receivables	$ 28,782	$ 45,167