Note 3 - Stock-based Compensation - Allocation of Stock-based Compensation to Operating Expenses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 27, 2022	Mar. 28, 2021	Mar. 28, 2022	Mar. 27, 2022	Mar. 28, 2021
Allocated share-based compensation expense	$ 1,507	$ 2,871	$ 6,803	$ 6,803	$ 8,229
Selling and Marketing Expense [Member]
Allocated share-based compensation expense	600	1,236	2,933		3,747
Technology and Development [Member]
Allocated share-based compensation expense	63	132	274		549
General and Administrative Expense [Member]
Allocated share-based compensation expense	$ 844	$ 1,503	$ 3,596		$ 3,933