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Income Taxes (Schedule of Effective Income Tax Rate Reconciliation) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 29, 2018 | Dec. 30, 2017 | Dec. 31, 2016
Income Taxes [Abstract] |  |  |
Income taxes at federal statutory rate | $ 17,249 | $ 27,658 | $ 43,631
State income taxes, net of federal income tax benefit | 639 | 1,306 | 2,413
Deferred tax on gain on bargain purchase | 0 | 0 | (8,358)
Nondeductible employee-related expenses | 768 | 1,828 |
2017 tax reform | 657 | (49,336) |
Other | 85 | (847) | (187)
Provision for income taxes | $ 19,398 | $ (19,391) | $ 37,499
Effective tax rate | 23.60% | (24.50%) | 30.10%

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