Fair Value Measurements - Changes in Fair Value of Recurring Fair Value Measurements Using Significant Unobservable Inputs (Level 3), Consisting of Contingent Consideration Liabilities (Detail) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 6 Months Ended | ||
---|---|---|---|---|
Mar. 29, 2014
|
Mar. 30, 2013
|
Mar. 29, 2014
|
Mar. 30, 2013
|
|
Fair Value Disclosures [Abstract] | ||||
Balance at beginning of period | $ 3,647 | $ 93,000 | $ 3,780 | $ 86,368 |
Fair value adjustments | 799 | 10,839 | ||
Payments | (254) | (90,172) | (387) | (93,580) |
Balance at end of period | $ 3,393 | $ 3,627 | $ 3,393 | $ 3,627 |