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Income taxes - Additional information (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Jul. 01, 2025
Jun. 30, 2025
Income Tax Disclosure [Line Items]    
Deferred tax assets increase in valuation allowance during the period   $ 445,000
Percentage of depreciation on qualified assets 100.00%  
Senate Bill No.117 [Member]    
Income Tax Disclosure [Line Items]    
Income tax expense benefit   0
Tax credits eligible for set off   $ 5,000
Internal Revenue Service (IRS) [Member] | Minimum [Member]    
Income Tax Disclosure [Line Items]    
Percentage of total owneship control to be maintained by the current shareholders for availing operating loss carry forwards   50.00%
Period of ownership control for which the shareholders are to sustain their holding for availing operating loss carry forwards   3 years
Domestic Tax Authority [Member] | Tax Year 2019 [Member]    
Income Tax Disclosure [Line Items]    
Tax year subject to examination   2019
Domestic Tax Authority [Member] | Tax Year 2023 [Member]    
Income Tax Disclosure [Line Items]    
Tax year subject to examination   2023
State and Local Jurisdiction [Member] | Tax Year 2020 [Member]    
Income Tax Disclosure [Line Items]    
Tax year subject to examination   2020
State and Local Jurisdiction [Member] | Tax Year 2023 [Member]    
Income Tax Disclosure [Line Items]    
Tax year subject to examination   2023