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Basis of Presentation and General Information (Gain and Loss Results for Discontinued Operations) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Jan. 01, 2021 | Dec. 27, 2019 | Dec. 28, 2018
Cost of service: |  |  |
Loss from discontinued operations | $ (172) | $ (6) | $ (3,450)
European REL Working Capital group [Member] |  |  |
Revenue: |  |  |
Total revenue |  | 92 | 3,015
Cost of service: |  |  |
Total cost of service | 8 | 45 | 5,836
Selling, general and administrative costs | 165 | 52 | 1,210
Total costs and operating expenses | 173 | 97 | 7,046
Loss from discontinued operations before income taxes | (173) | (5) | (4,031)
Income tax (benefit) expense | (1) | 1 | (581)
Loss from discontinued operations | (172) | (6) | (3,450)
European REL Working Capital group [Member] | Revenue Before Reimbursements [Member] |  |  |
Revenue: |  |  |
Total revenue |  | 75 | 2,519
European REL Working Capital group [Member] | Reimbursements [Member] |  |  |
Revenue: |  |  |
Total revenue |  | 17 | 496
Cost of service: |  |  |
Total cost of service |  | 17 | 496
European REL Working Capital group [Member] | Cost Before Reimbursements [Member] |  |  |
Cost of service: |  |  |
Total cost of service | $ 8 | $ 28 | $ 5,340

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