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Significant Accounting Policies - Weighted Average Shares Outstanding Used in Computing Basic and Diluted Earnings Per Share (Detail) - shares	12 Months Ended
	Jun. 25, 2020	Jun. 27, 2019	Jun. 28, 2018
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]
Weighted average number of shares outstanding - basic	11,463,968	11,430,174	11,383,080
Effect of dilutive securities:
Stock options and restricted stock units	72,823	71,238	66,306
Weighted average number of shares outstanding - diluted	11,536,791	11,501,412	11,449,386

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The sum of dilutive potential common shares or units used in the calculation of the diluted per-share or per-unit computation.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
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The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

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Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Topic 260
-SubTopic 10
-Section 45
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