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Management Succession Costs (Details)
$ in Millions
Sep. 24, 2020
USD ($)
shares
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]  
Reversal of compensation of expense $ 2.9
Chief Executive Officer  
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]  
Separation payment $ 6.4
Nonvested shares forfeited | shares 96,427