Income taxes - Schedule of Reconciliation between Taxes that Would Arise by Applying Statutory Tax Rate of Country of Principal Operations to Effective Tax Charge (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Jun. 28, 2024	Jun. 30, 2023	Jun. 24, 2022
Income Taxes [Line Items]
Income before income taxes	$ 311,354	$ 260,096	$ 206,966
Tax expense calculated at a statutory corporate income tax rate of 20%	62,271	52,019	41,393
Effect of income taxes from locations with tax rates different from Thailand	(945)	659	681
Income not subject to tax	(62,940)	(43,679)	(35,982)
Income tax on unremitted earnings	1,488	2,452	1,417
Non-deductible expenses	10,347	35	68
Foreign operations	(534)	1,968	(1,165)
Tax rebate from research and development application	17	(124)	(873)
Provision for uncertain income tax position	1,131	(7)	668
Utilization of loss and tax credits carryforward	0	(80)	(194)
Changes in valuation allowance	3,759	(1,608)	0
Others	579	548	573
Total income tax expense	$ 15,173	$ 12,183	$ 6,586
Income not subject to tax per ordinary share on a diluted basis (in USD per share)	$ 1.72	$ 1.19	$ 0.96
Domestic tax jurisdiction
Income Taxes [Line Items]
Income not subject to tax	$ (306,000)	$ (196,500)	$ (171,000)