Cash, cash equivalents and short-term investments - Additional Information (Details) - USD ($)	12 Months Ended
	Jun. 24, 2022	Jun. 25, 2021
Cash, cash equivalents and marketable securities [Line Items]
Maturities period of marketable securities (or less)	3 months
Effective interest rate on short term bank deposits	0.50%	0.70%
Unrecognized gains or losses	$ 0	$ 0
Percentage of cash and cash equivalents held by parent company	59.00%	65.00%
Gain from sales and maturities of available-for-sale securities		$ 400,000
Impairment losses	$ 0	0
Bank Time Deposits
Cash, cash equivalents and marketable securities [Line Items]
Investments in held-to-maturity debt securities	$ 0	$ 10,500,000