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Fair Value of Financial Instruments - Summary of Financial Assets Measured at Fair Value on Recurring Basis (Detail) - USD ($)
$ in Thousands
12 Months Ended
Jul. 02, 2021
Jul. 03, 2020
Assets:    
Gain on sale of investments $ 1,538 $ 4,310
Proceeds from sale of other investments 426 3,810
Assets, fair value adjustment $ 2,007  
Fair Value, Measurements, Recurring | Estimate of Fair Value Measurement [Member]    
Assets:    
Fair value measurement disclosure   12,013
Fair Value, Measurements, Recurring | Equity Securities [Member] | Estimate of Fair Value Measurement [Member]    
Assets:    
Fair value measurement disclosure   2,007
Fair Value, Measurements, Recurring | Certificates of Deposit [Member] | Estimate of Fair Value Measurement [Member]    
Assets:    
Fair value measurement disclosure   10,006
Fair Value, Measurements, Recurring | Level 1    
Assets:    
Fair value measurement disclosure   2,007
Fair Value, Measurements, Recurring | Level 1 | Equity Securities [Member]    
Assets:    
Fair value measurement disclosure   2,007
Fair Value, Measurements, Recurring | Level 1 | Certificates of Deposit [Member]    
Assets:    
Fair value measurement disclosure   0
Fair Value, Measurements, Recurring | Level 2    
Assets:    
Fair value measurement disclosure   10,006
Fair Value, Measurements, Recurring | Level 2 | Equity Securities [Member]    
Assets:    
Fair value measurement disclosure   0
Fair Value, Measurements, Recurring | Level 2 | Certificates of Deposit [Member]    
Assets:    
Fair value measurement disclosure   10,006
Fair Value, Measurements, Recurring | Level 3    
Assets:    
Fair value measurement disclosure   0
Fair Value, Measurements, Recurring | Level 3 | Equity Securities [Member]    
Assets:    
Fair value measurement disclosure   0
Fair Value, Measurements, Recurring | Level 3 | Certificates of Deposit [Member]    
Assets:    
Fair value measurement disclosure   $ 0