Annual report pursuant to Section 13 and 15(d)

Income Taxes (Narrative) (Details)

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Income Taxes (Narrative) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 30, 2018
Dec. 31, 2017
Dec. 25, 2016
Income Tax Contingency [Line Items]      
Deferred tax balance adjustment $ 173 $ (11,696) $ 0
Excess tax benefit from stock-based compensation     $ 3,265
Deferred Tax Assets, Tax Credit Carryforwards, General Business $ 16,048 $ 13,653