CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Parentheticals) - USD ($) $ in Thousands		12 Months Ended
	Jul. 01, 2018	Jun. 30, 2020	Jun. 30, 2019
Reclassification pursuant to adoption of ASU 2016-01, tax (in Dollars)	$ 1,049
Common Class A [Member]
Purchases of shares of Common Stock (class A)		105,721	20,575
Common Class C [Member]
Number of shares converted		(162)	(60)
Common Stock [Member] | Common Class A [Member]
Balance	13,866,691	13,866,751	13,866,691
Balance		13,866,913	13,866,751
Purchases of shares of Common Stock (class A)		105,721	20,575
Issuance of stock under ESPP shares of Common Stock (class A)		1,648	2,461
Number of shares issued as result of stock conversion		162	60
Common Stock [Member] | Common Class C [Member]
Balance	2,068,857	2,068,797	2,068,857
Balance		2,068,635	2,068,797
Number of shares converted		(162)	(60)