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)

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Fair Value Measurements - Summary of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($)
$ in Thousands
Mar. 25, 2017
Sep. 24, 2016
Mar. 26, 2016
Liabilities:      
Total liabilities $ 4,420 $ 5,113 $ 6,215
Liability for Contingent Consideration      
Liabilities:      
Total liabilities 4,420 5,113 6,215
Level 1      
Liabilities:      
Total liabilities 0 0 0
Level 1 | Liability for Contingent Consideration      
Liabilities:      
Total liabilities 0 0 0
Level 2      
Liabilities:      
Total liabilities 0 0 0
Level 2 | Liability for Contingent Consideration      
Liabilities:      
Total liabilities 0 0 0
Level 3      
Liabilities:      
Total liabilities 4,420 5,113 6,215
Level 3 | Liability for Contingent Consideration      
Liabilities:      
Total liabilities $ 4,420 $ 5,113 $ 6,215