Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Summary of Assets at Fair Value on a Recurring Basis (Details)

v3.19.2
Fair Value Measurements - Summary of Assets at Fair Value on a Recurring Basis (Details) - Recurring - USD ($)
$ in Thousands
Jul. 14, 2019
Dec. 30, 2018
Assets:    
Investments in rabbi trust $ 6,808 $ 8,198
Total assets measured at fair value 6,808 8,198
Level 1    
Assets:    
Investments in rabbi trust 6,808 8,198
Total assets measured at fair value 6,808 8,198
Level 2    
Assets:    
Investments in rabbi trust 0 0
Total assets measured at fair value 0 0
Level 3    
Assets:    
Investments in rabbi trust 0 0
Total assets measured at fair value $ 0 $ 0