Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Summary of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Details)

v3.19.1
Fair Value Measurements - Summary of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - Recurring - USD ($)
$ in Thousands
Mar. 30, 2019
Sep. 29, 2018
Mar. 31, 2018
Liabilities:      
Liabilities, fair value disclosure $ 7,729 $ 8,224 $ 9,148
Liability for contingent consideration      
Liabilities:      
Liabilities, fair value disclosure 7,729 8,224 9,148
Level 1      
Liabilities:      
Liabilities, fair value disclosure 0 0 0
Level 1 | Liability for contingent consideration      
Liabilities:      
Liabilities, fair value disclosure 0 0 0
Level 2      
Liabilities:      
Liabilities, fair value disclosure 0 0 0
Level 2 | Liability for contingent consideration      
Liabilities:      
Liabilities, fair value disclosure 0 0 0
Level 3      
Liabilities:      
Liabilities, fair value disclosure 7,729 8,224 9,148
Level 3 | Liability for contingent consideration      
Liabilities:      
Liabilities, fair value disclosure $ 7,729 $ 8,224 $ 9,148