Stock Option and Purchase Plans - Summary of Stock Option Activity Under Our Stock Incentive Plan (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Jun. 28, 2020	Jun. 30, 2019
Share Based Compensation [Abstract]
Shares, Beginning Balance	117,360	133,074
Shares, Exercised	(26,500)	(15,714)
Shares, Ending Balance	90,860	117,360
Shares, Exercisable	90,860	117,360
Weighted Average Exercise Price, Beginning Balance	$ 31.85	$ 29.37
Weighted Average Exercise Price, Exercised	18.00	10.92
Weighted Average Exercise Price, Ending Balance	35.88	31.85
Weighted Average Exercise Price, Exercisable	$ 35.88	$ 31.85
Weighted Average Remaining Contractual Term, Outstanding	2 years 4 months 24 days
Weighted Average Remaining Contractual Term, Exercisable	2 years 4 months 24 days	2 years 8 months 12 days
Aggregate Intrinsic Value, Exercisable		$ 162