Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements - Schedule of assets measured at fair value on a recurring basis (Details)

v3.19.3.a.u2
Fair Value Measurements - Schedule of assets measured at fair value on a recurring basis (Details) - Recurring - USD ($)
$ in Thousands
Dec. 29, 2019
Dec. 30, 2018
Assets:    
Investments in rabbi trust $ 7,337 $ 8,198
Total assets measured at fair value 7,337 8,198
Level 1    
Assets:    
Investments in rabbi trust 7,337 8,198
Total assets measured at fair value 7,337 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