Quarterly report pursuant to Section 13 or 15(d)

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

v3.21.1
Fair Value Measurements - Summary of Assets at Fair Value on a Recurring Basis (Details) - Recurring - USD ($)
$ in Thousands
Apr. 18, 2021
Dec. 27, 2020
Assets:    
Investments in rabbi trust $ 6,788 $ 6,740
Total assets measured at fair value 6,788 6,740
Level 1    
Assets:    
Investments in rabbi trust 6,788 6,740
Total assets measured at fair value 6,788 6,740
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