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Note 4 - Accounts Receivable, Transit Accounts Receivable and Transit Accounts Payable - Accounts Receivable (Details) - USD ($) $ in Thousands | Mar. 30, 2024 | Dec. 30, 2023
--- | --- | ---
Allowance for sales discounts and doubtful accounts | $ (1,600) | $ (1,600)
Accounts receivable, net | 73,486 | 70,690
Billed Revenues [Member] |  |
Accounts receivable, current | 57,983 | 51,111
Unbilled Revenues [Member] |  |
Accounts receivable, current | 9,181 | 14,737
Work In Progress [Member] |  |
Accounts receivable, current | $ 7,922 | $ 6,442

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