v3.8.0.1
Financial Instruments Measured at Fair Value on Recurring Basis (Detail) - Fair Value, Measurements, Recurring - USD ($)
$ in Thousands
Dec. 29, 2017
Jun. 30, 2017
Assets    
Derivative assets $ 105 $ 15
Total 154,636 154,050
Cash Equivalents    
Assets    
Marketable securities 5,128 2,585
Corporate bonds and commercial papers    
Assets    
Marketable securities 106,481 98,274
U.S. agency and U.S. treasury securities    
Assets    
Marketable securities 38,633 50,666
Sovereign And Municipal Securities    
Assets    
Marketable securities 4,289 2,510
Significant Other Observable Inputs (Level 2)    
Assets    
Derivative assets 105 [1] 15 [2]
Total 154,636 154,050
Significant Other Observable Inputs (Level 2) | Cash Equivalents    
Assets    
Marketable securities 5,128 2,585
Significant Other Observable Inputs (Level 2) | Corporate bonds and commercial papers    
Assets    
Marketable securities 106,481 98,274
Significant Other Observable Inputs (Level 2) | U.S. agency and U.S. treasury securities    
Assets    
Marketable securities 38,633 50,666
Significant Other Observable Inputs (Level 2) | Sovereign And Municipal Securities    
Assets    
Marketable securities $ 4,289 $ 2,510
[1] Foreign currency forward contracts with notional amount of $31.5 million and Canadian dollars 0.3 million.
[2] Foreign currency forward contracts with notional amount of $1.0 million and Canadian dollars 0.6 million.