Annual report pursuant to Section 13 and 15(d)

Share-Based Compensation and Other Compensation Matters (Details 3)

v3.19.3.a.u2
Share-Based Compensation and Other Compensation Matters (Details 3) - Performance share units - USD ($)
$ in Thousands
12 Months Ended
Jan. 01, 2018
Jan. 01, 2017
Mar. 01, 2016
Mar. 05, 2015
Dec. 31, 2019
2015 PSU Grants          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Stock awards granted (in shares or units)       45,656  
Grant date fair value       $ 1,678  
Unvested at the end of the period (in shares)         0
2016 PSU Grants          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Stock awards granted (in shares or units)     26,299    
Grant date fair value     $ 1,005    
Unvested at the end of the period (in shares)         0
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      
Unvested at the end of the period (in shares)         39,351
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        
Unvested at the end of the period (in shares)         59,110