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FAIR VALUE - Asset Measured at Fair Value (Details) - USD ($)
$ in Thousands
Jun. 25, 2022
Jun. 26, 2021
Money market funds | Cash and Cash Equivalents    
Fair Value    
Investments at fair value $ 4,000  
Money market funds | Restricted Investment    
Fair Value    
Investments at fair value 200  
Fixed Income | Restricted Investment    
Fair Value    
Investments at fair value 19,700  
Mutual funds, equity and alternative investments | Investments    
Fair Value    
Investments at fair value 35,500  
Money market and mutual funds | Other Non current Assets    
Fair Value    
Investments at fair value 600  
Ardellis Insurance Ltd.    
Fair Value    
Total Fair Value 55,155 $ 51,681
Estimate of Fair Value Measurement | Recurring    
Fair Value    
Investments at fair value 59,963 55,506
Assets at fair value 59,963 55,506
Estimate of Fair Value Measurement | Recurring | Money market funds    
Fair Value    
Investments at fair value 4,189 2,859
Estimate of Fair Value Measurement | Recurring | Fixed Income    
Fair Value    
Investments at fair value 19,338 17,854
Estimate of Fair Value Measurement | Recurring | Treasury securities    
Fair Value    
Investments at fair value 342 307
Estimate of Fair Value Measurement | Recurring | Equity    
Fair Value    
Investments at fair value 17,249 19,014
Estimate of Fair Value Measurement | Recurring | Alternative Investments    
Fair Value    
Investments at fair value 4,079 3,304
Estimate of Fair Value Measurement | Recurring | Mutual Fund    
Fair Value    
Investments at fair value 14,766 12,168
Estimate of Fair Value Measurement | Recurring | Domestic stock    
Fair Value    
Investments at fair value 12,723 10,037
Estimate of Fair Value Measurement | Recurring | International stock funds    
Fair Value    
Investments at fair value 1,378 1,463
Estimate of Fair Value Measurement | Recurring | Target funds    
Fair Value    
Investments at fair value 21 22
Estimate of Fair Value Measurement | Recurring | Bond funds    
Fair Value    
Investments at fair value 134 145
Estimate of Fair Value Measurement | Recurring | Alternative funds    
Fair Value    
Investments at fair value 510 501
Estimate of Fair Value Measurement | Recurring | Quoted Prices in Active Markets (Level 1)    
Fair Value    
Investments at fair value 35,060 31,752
Assets at fair value 35,060 31,752
Estimate of Fair Value Measurement | Recurring | Quoted Prices in Active Markets (Level 1) | Money market funds    
Fair Value    
Investments at fair value 19 19
Estimate of Fair Value Measurement | Recurring | Quoted Prices in Active Markets (Level 1) | Fixed Income    
Fair Value    
Investments at fair value 2,684 244
Estimate of Fair Value Measurement | Recurring | Quoted Prices in Active Markets (Level 1) | Treasury securities    
Fair Value    
Investments at fair value 342 307
Estimate of Fair Value Measurement | Recurring | Quoted Prices in Active Markets (Level 1) | Equity    
Fair Value    
Investments at fair value 17,249 19,014
Estimate of Fair Value Measurement | Recurring | Quoted Prices in Active Markets (Level 1) | Mutual Fund    
Fair Value    
Investments at fair value 14,766 12,168
Estimate of Fair Value Measurement | Recurring | Quoted Prices in Active Markets (Level 1) | Domestic stock    
Fair Value    
Investments at fair value 12,723 10,037
Estimate of Fair Value Measurement | Recurring | Quoted Prices in Active Markets (Level 1) | International stock funds    
Fair Value    
Investments at fair value 1,378 1,463
Estimate of Fair Value Measurement | Recurring | Quoted Prices in Active Markets (Level 1) | Target funds    
Fair Value    
Investments at fair value 21 22
Estimate of Fair Value Measurement | Recurring | Quoted Prices in Active Markets (Level 1) | Bond funds    
Fair Value    
Investments at fair value 134 145
Estimate of Fair Value Measurement | Recurring | Quoted Prices in Active Markets (Level 1) | Alternative funds    
Fair Value    
Investments at fair value 510 501
Estimate of Fair Value Measurement | Recurring | Prices with Other Observable Inputs (Level 2)    
Fair Value    
Investments at fair value 20,824 20,450
Assets at fair value 20,824 20,450
Estimate of Fair Value Measurement | Recurring | Prices with Other Observable Inputs (Level 2) | Money market funds    
Fair Value    
Investments at fair value 4,170 2,840
Estimate of Fair Value Measurement | Recurring | Prices with Other Observable Inputs (Level 2) | Fixed Income    
Fair Value    
Investments at fair value 16,654 17,610
Estimate of Fair Value Measurement | Recurring | Prices with Unobservable Inputs (Level 3)    
Fair Value    
Investments at fair value 4,079 3,304
Assets at fair value 4,079 3,304
Estimate of Fair Value Measurement | Recurring | Prices with Unobservable Inputs (Level 3) | Alternative Investments    
Fair Value    
Investments at fair value $ 4,079 $ 3,304