Annual report pursuant to Section 13 and 15(d)

Share-Based Compensation and Other Compensation Matters (Grants to Executives) (Details)

v3.22.0.1
Share-Based Compensation and Other Compensation Matters (Grants to Executives) (Details) - USD ($)
$ in Thousands
12 Months Ended
Jan. 01, 2021
Jan. 01, 2020
Jan. 01, 2019
Jan. 01, 2018
Jan. 01, 2017
Dec. 31, 2021
Performance-based PIUs | 2019 PB PIU            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock awards granted (in shares or units)     193,682      
Grant Date Fair Value     $ 2,415      
Unvested at the end of the period (in shares or units)           156,104
Performance-based PIUs | 2020 PB PIU            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock awards granted (in shares or units)   176,758        
Grant Date Fair Value   $ 2,891        
Unvested at the end of the period (in shares or units)           141,152
Performance-based PIUs | 2021 PB PIU            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock awards granted (in shares or units) 227,544          
Grant Date Fair Value $ 3,417          
Unvested at the end of the period (in shares or units)           227,544
Performance share units | 2017 PSU Grants            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock awards granted (in shares or units)         39,351  
Grant Date Fair Value         $ 1,415  
Performance share units | 2018 PSU Grants            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock awards granted (in shares or units)       59,110    
Grant Date Fair Value       $ 1,890