Quarterly report pursuant to Section 13 or 15(d)

Income Taxes - Tax Rate (Details)

v3.8.0.1
Income Taxes - Tax Rate (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 27, 2018
Dec. 28, 2017
Effect of Tax Cuts and Jobs Act of 2017 [Abstract]    
Provisional amount related to Tax Cuts and Jobs Act of 2017   $ 17.9
Scenario, Forecast [Member]    
Effect of Tax Cuts and Jobs Act of 2017 [Abstract]    
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent 21.00%  
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent 3.60%