Note 11 - Income Taxes - Effective Income Tax Rate Reconciliation (Details)	12 Months Ended
	Jul. 03, 2022	Jun. 27, 2021	Jun. 28, 2020
Tax at U.S. statutory rates	21.00%	21.00%	21.00%
State income taxes, net of federal tax benefit	4.20%	4.20%	4.50%
Capital loss expiration	15.50%	0.00%	0.00%
Valuation allowance change	(19.80%)	(0.30%)	(0.30%)
Non-deductible compensation	5.30%	0.70%	1.10%
Excess tax benefit from stock-based compensation	(16.10%)	(4.10%)	(1.00%)
Tax credits	(3.90%)	(0.90%)	(1.10%)
Enhanced deductions	(2.10%)	(0.20%)	(0.40%)
Other, net	0.70%	0.00%	0.40%
Effective tax rate	4.80%	20.40%	24.20%