Revenue, Receivables and Contract Assets and Liabilities Accounts Receivable (Details) - USD ($) $ in Thousands	May 28, 2022	Feb. 26, 2022	Feb. 27, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total receivables	$ 195,833	$ 170,724
Beginning balance	2,092	2,132	$ 1,947
Receivables, net	193,741	168,592
Trade accounts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total receivables	139,846	129,085
Construction contracts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total receivables	19,002	12,857
Contract retainage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total receivables	$ 36,985	$ 28,782