Revenue, Receivables and Contract Assets and Liabilities Accounts Receivable (Details) - USD ($) $ in Thousands	Aug. 27, 2022	Feb. 26, 2022	Feb. 27, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total receivables	$ 233,784	$ 170,724
Beginning balance	1,931	2,132	$ 1,947
Receivables, net	231,853	168,592
Trade accounts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total receivables	146,035	129,085
Construction contracts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total receivables	65,482	12,857
Contract retainage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total receivables	$ 22,267	$ 28,782