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Fair Value of Financial Instruments - Carrying Value and Fair Value Estimate of Current and Long-Term Debt (Detail) - USD ($)
$ in Thousands
Dec. 26, 2019
Jun. 27, 2019
Dec. 27, 2018
Fair Value Disclosures [Abstract]      
Carrying value of long-term debt: $ 23,767 $ 27,798 $ 31,061
Fair value of long-term debt: $ 24,164 $ 27,720 $ 30,176