Financial Instruments - Financial Instruments (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Jul. 01, 2012
Assets:
Financial assets, fair value	$ 54,929	$ 47,930
Total short-term investments	46,131	39,280
Total financial assets	54,929	47,930
Liabilities:
Contingent consideration	650	540
Total financial liabilities	650	540
Money market funds [Member]
Assets:
Financial assets, fair value	8,798	8,650
Corporate debt securities and certificates of deposits [Member]
Assets:
Financial assets, fair value	35,034
Government sponsored enterprise debt securities [Member]
Assets:
Financial assets, fair value	8,246	12,515
Mutual funds [Member]
Assets:
Financial assets, fair value	2,851	3,062
Corporate debt securities and certificates of deposits [Member]
Assets:
Financial assets, fair value	35,034	23,703
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Assets:
Total short-term investments	2,851	3,062
Total financial assets	11,649	11,712
Liabilities:
Contingent consideration
Total financial liabilities
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Money market funds [Member]
Assets:
Financial assets, fair value	8,798	8,650
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Corporate debt securities and certificates of deposits [Member]
Assets:
Financial assets, fair value
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Government sponsored enterprise debt securities [Member]
Assets:
Financial assets, fair value
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Mutual funds [Member]
Assets:
Financial assets, fair value	2,851	3,062
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Corporate debt securities and certificates of deposits [Member]
Assets:
Financial assets, fair value
Significant Other Observable Inputs (Level 2) [Member]
Assets:
Total short-term investments	43,280	36,218
Total financial assets	43,280	36,218
Liabilities:
Contingent consideration
Total financial liabilities
Significant Other Observable Inputs (Level 2) [Member] | Money market funds [Member]
Assets:
Financial assets, fair value
Significant Other Observable Inputs (Level 2) [Member] | Corporate debt securities and certificates of deposits [Member]
Assets:
Financial assets, fair value	35,034
Significant Other Observable Inputs (Level 2) [Member] | Government sponsored enterprise debt securities [Member]
Assets:
Financial assets, fair value	8,246	12,515
Significant Other Observable Inputs (Level 2) [Member] | Mutual funds [Member]
Assets:
Financial assets, fair value
Significant Other Observable Inputs (Level 2) [Member] | Corporate debt securities and certificates of deposits [Member]
Assets:
Financial assets, fair value		23,703
Significant Other Unobservable Inputs (Level 3) [Member]
Assets:
Total short-term investments
Total financial assets
Liabilities:
Contingent consideration	650	540
Total financial liabilities	650	540
Significant Other Unobservable Inputs (Level 3) [Member] | Money market funds [Member]
Assets:
Financial assets, fair value
Significant Other Unobservable Inputs (Level 3) [Member] | Corporate debt securities and certificates of deposits [Member]
Assets:
Financial assets, fair value
Significant Other Unobservable Inputs (Level 3) [Member] | Government sponsored enterprise debt securities [Member]
Assets:
Financial assets, fair value
Significant Other Unobservable Inputs (Level 3) [Member] | Mutual funds [Member]
Assets:
Financial assets, fair value
Significant Other Unobservable Inputs (Level 3) [Member] | Corporate debt securities and certificates of deposits [Member]
Assets:
Financial assets, fair value