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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. 28, 2018	Jun. 29, 2017	Jun. 30, 2016
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]
Weighted average number of shares outstanding - basic	11,383,080	11,317,149	11,233,975
Effect of dilutive securities:
Stock options and restricted stock units	66,306	86,456	98,949
Weighted average number of shares outstanding - diluted	11,449,386	11,403,605	11,332,924

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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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-Name Accounting Standards Codification
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-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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-SubTopic 10
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