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15. Income Taxes (Details Narrative) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 30, 2019 | Mar. 31, 2018
Income Tax Disclosure [Abstract] |  |
Effective tax rate | 25.53% | 26.80%
Provision for income taxes | $ (700) | $ (575)
Pre-provision loss | $ 2,728 | $ 2,050

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