Income Taxes - Tax Cuts and Jobs Act (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 26, 2019	Dec. 27, 2018	Dec. 28, 2017
Effect of Tax Cuts and Jobs Act [Abstract]
Federal statutory tax rate (as a percent)	21.00%	21.00%	35.00%
Provisional amount related to Tax Cuts and Jobs Act of 2017			$ (17,900)
Adjustment to provisional amount		$ (600)
Decrease in effective tax rate, as a percent		(0.47)

No definition available.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

+ References

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Amount of reasonable estimate for income tax expense (benefit) for which accounting for tax effect for remeasurement of deferred tax from change in tax rate is incomplete pursuant to Tax Cuts and Jobs Act.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
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Amount of income tax expense (benefit) for measurement period adjustment from accounting for tax effect pursuant to Tax Cuts and Jobs Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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Percentage of increase (decrease) in effective tax rate for measurement period adjustment from accounting for tax effect pursuant to Tax Cuts and Jobs Act.

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