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Fair Value Measurements - Summary of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (USD $)
In Thousands, unless otherwise specified |
Sep. 27, 2014
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Sep. 28, 2013
|
|---|---|---|
| Assets: | ||
| Total assets | $ 9,990 | $ 17,820 |
| Liabilities: | ||
| Total liabilities | 4,414 | 4,165 |
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Liability for Contingent Consideration [Member]
|
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| Liabilities: | ||
| Total liabilities | 4,414 | 4,165 |
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Certificates of Deposit [Member]
|
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| Assets: | ||
| Total assets | 17,820 | |
|
Short Term Investments [Member]
|
||
| Assets: | ||
| Total assets | 9,990 | |
|
Level 1 [Member]
|
||
| Assets: | ||
| Total assets | 9,990 | 0 |
| Liabilities: | ||
| Total liabilities | 0 | 0 |
|
Level 1 [Member] | Liability for Contingent Consideration [Member]
|
||
| Liabilities: | ||
| Total liabilities | 0 | 0 |
|
Level 1 [Member] | Certificates of Deposit [Member]
|
||
| Assets: | ||
| Total assets | 0 | |
|
Level 1 [Member] | Short Term Investments [Member]
|
||
| Assets: | ||
| Total assets | 9,990 | |
|
Level 2 [Member]
|
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| Assets: | ||
| Total assets | 0 | 17,820 |
| Liabilities: | ||
| Total liabilities | 0 | 0 |
|
Level 2 [Member] | Liability for Contingent Consideration [Member]
|
||
| Liabilities: | ||
| Total liabilities | 0 | 0 |
|
Level 2 [Member] | Certificates of Deposit [Member]
|
||
| Assets: | ||
| Total assets | 17,820 | |
|
Level 2 [Member] | Short Term Investments [Member]
|
||
| Assets: | ||
| Total assets | 0 | |
|
Level 3 [Member]
|
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| Assets: | ||
| Total assets | 0 | 0 |
| Liabilities: | ||
| Total liabilities | 4,414 | 4,165 |
|
Level 3 [Member] | Liability for Contingent Consideration [Member]
|
||
| Liabilities: | ||
| Total liabilities | 4,414 | 4,165 |
|
Level 3 [Member] | Certificates of Deposit [Member]
|
||
| Assets: | ||
| Total assets | 0 | |
|
Level 3 [Member] | Short Term Investments [Member]
|
||
| Assets: | ||
| Total assets | $ 0 |