ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 29, 2020	Jun. 28, 2020	Jun. 30, 2019
Income Taxes [Abstract]
Increase in valuation allowance on deferred tax assets	$ 4,300	$ 4,300
Income tax expense		4,078	$ (51)
Federal deferred tax expense		4,053	(189)
Current state tax expense		20	$ 93
Net operating loss carryforwards		$ 23,600
Operating loss carryforwards, expiry date		Dec. 31, 2032
Amount of operating loss carryforwards limited with no expiration		$ 800
Operating loss carryforward, percentage limitation on use		80.00%