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Note 4 - Accounts Receivable, Transit Accounts Receivable and Transit Accounts Payable - Accounts Receivable (Details) - USD ($) $ in Thousands | Mar. 29, 2025 | Dec. 28, 2024
--- | --- | ---
Provision for credit losses | $ (1,570) | $ (1,570)
Accounts receivable, net | 68,390 | 77,960
Billed Revenues [Member] |  |
Accounts receivable, current | 47,096 | 55,224
Unbilled Revenues [Member] |  |
Accounts receivable, current | 14,178 | 16,931
Work In Progress [Member] |  |
Accounts receivable, current | $ 8,686 | $ 7,375

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