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Income Taxes (Narrative) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 28, 2019 | Dec. 29, 2018
Operating Loss Carryforwards. |  |
Increase (Decrease) in valuation allowance | $ 2.9 | $ 3.9
U.S. federal statutory tax | 21.00% | 21.00%
Net operating loss carryforwards, which will expire from 2019 through 2037 | $ 104.2 |
Net operating loss carryforwards, which will be carried forward indefinitely | 27.6 |
Unrecognized Tax Benefits | 0.0 |
Federal |  |
Operating Loss Carryforwards. |  |
Net operating loss carryforwards | 131.8 |
Tax credit carryforwards | $ 1.8 |
Tax Credit Carryforward, Expiration Date | Dec. 31, 2026 |
State and Local Jurisdiction |  |
Operating Loss Carryforwards. |  |
Net operating loss carryforwards | $ 71.9 |
Operating Loss Carryforwards, Expiration Date | Dec. 31, 2029 |
Tax credit carryforwards | $ 1.9 |
Foreign Tax Authority |  |
Operating Loss Carryforwards. |  |
Net operating loss carryforwards | $ 2.5 |

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