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Stock-Based Compensation (Performance-Contingent Total Shareholder Return Shares) - Additional Information (Detail) - USD ($)
$ in Millions
12 Months Ended
Oct. 06, 2019
Jul. 14, 2019
May 23, 2019
Dec. 28, 2019
Dec. 29, 2018
Performance Contingent Total Shareholders Return Shares          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Vesting period       3 years 2 years
Shares, Forfeited     112,840    
Total Shareholders Return          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Share-based payment award, fair value assumptions, method used       Inputs into the model included the following for the company and comparator companies: (i) TSR from the beginning of the performance cycle through the measurement date; (ii) volatility; (iii) risk-free interest rates; and (iv) the correlation of the comparator companies’ TSR. The inputs are based on historical capital market data.  
Total Shareholders Return | Omnibus Plan          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Unrecognized compensation cost related to nonvested restricted stock granted by the EPIP       $ 5.0  
Expected weighted-average period to recognize compensation cost (years)       2 years 2 months 1 day  
Shares granted 2,000 5,000 11,000 0 440,000