Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Summary of Changes in Fair Value of Level 3 Financial Instruments (Details)

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Fair Value Measurements - Summary of Changes in Fair Value of Level 3 Financial Instruments (Details) - Level 3 - USD ($)
$ in Thousands
9 Months Ended
Jun. 25, 2016
Jun. 27, 2015
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Beginning balance $ 3,625 $ 4,414
Estimated contingent performance-based consideration established at the time of acquisition 2,590  
Changes in the fair value of contingent performance-based payments established at the time of acquisition 140 (71)
Ending balance $ 6,355 $ 4,343