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Revenue, Receivables and Contract Assets and Liabilities (Details 2) - USD ($) $ in Thousands | Feb. 27, 2021 | Feb. 29, 2020 | Mar. 02, 2019
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Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total receivables | $ 177,864 | $ 199,275 |
Less: allowance for credit losses | 1,947 | 2,469 | $ 4,372
Receivables, net | 175,917 | 196,806 |
Trade accounts |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total receivables | 120,534 | 141,126 |
Construction contracts |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total receivables | 12,163 | 20,808 |
Contract retainage |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total receivables | $ 45,167 | $ 37,341 |

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