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Income Taxes (Details 2)
7 Months Ended 12 Months Ended
Dec. 31, 2015
Dec. 28, 2017
Dec. 29, 2016
May 28, 2015
Effective Income Tax Rate Reconciliation, Percent        
Statutory federal tax rate 35.00% 35.00% 35.00% 35.00%
Tax benefit from Tax Cuts and Jobs Act of 2017 0.00% (30.90%) 0.00% 0.00%
State income taxes, net of federal income tax benefit 5.10% 4.80% 4.80% 5.30%
Tax credits, net of federal income tax benefit (1.00%) (0.80%) (0.90%) (1.10%)
Other (0.50%) (2.80%) (1.10%) 0.30%
Unrecognized tax benefits and related interest 38.60% 5.30% 37.80% 39.50%