Income Taxes (Schedule of Effective Income Tax Rate Reconciliation) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
Income Taxes [Abstract]
Income taxes at federal statutory rate	$ 18,615	$ 17,249	$ 27,658
State income taxes, net of federal income tax benefit	1,333	639	1,306
Nondeductible employee-related expenses	1,974	768	1,828
2017 tax reform		657	(49,336)
Other	(1,261)	85	(847)
Provision for income taxes	$ 20,661	$ 19,398	$ (19,391)
Effective tax rate	23.30%	23.60%	(24.50%)

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations, attributable to increase (decrease) in the income tax rates.

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