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Income Taxes - Narrative (Details) - USD ($)
$ in Millions
1 Months Ended 9 Months Ended
Mar. 31, 2010
Sep. 26, 2021
Sep. 27, 2020
Dec. 27, 2020
Income Tax Disclosure [Abstract]        
Federal annual utilization of NOL carryforwards limit, next five years $ 27.0      
Threshold period for change in allowed annual amount of NOL to be recognized 5 years      
Federal annual utilization of NOL carryforwards limit, after year five $ 11.6      
Unrecognized tax benefits that if recognized would impact the effective tax rate for continuing operations       $ 25.4
Decrease resulting from current period tax positions   $ 0.1    
Expense for interest and penalties   0.5 $ 0.3  
Liabilities for uncertain tax positions believed to be reasonably possible to expire within twelve months   $ 0.3