Property, plant and equipment, net - Schedule of Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Jun. 28, 2024	Jun. 30, 2023
Property, Plant and Equipment [Line Items]
Cost	$ 634,399	$ 597,697
Less: Accumulated depreciation	(326,870)	(286,774)
Less: Impairment reserve	(289)	(573)
Net book value	307,240	310,350
Land and Land Improvements
Property, Plant and Equipment [Line Items]
Cost	61,297	60,424
Less: Accumulated depreciation	(328)	(71)
Less: Impairment reserve	0	0
Net book value	60,969	60,353
Building and Building Improvements
Property, Plant and Equipment [Line Items]
Cost	208,731	200,039
Less: Accumulated depreciation	(82,964)	(73,558)
Less: Impairment reserve	0	0
Net book value	125,767	126,481
Manufacturing Equipment
Property, Plant and Equipment [Line Items]
Cost	316,867	289,390
Less: Accumulated depreciation	(216,667)	(189,284)
Less: Impairment reserve	(289)	(573)
Net book value	99,911	99,533
Office Equipment
Property, Plant and Equipment [Line Items]
Cost	6,500	6,362
Less: Accumulated depreciation	(5,521)	(5,136)
Less: Impairment reserve	0	0
Net book value	979	1,226
Motor Vehicles
Property, Plant and Equipment [Line Items]
Cost	1,101	1,081
Less: Accumulated depreciation	(870)	(852)
Less: Impairment reserve	0	0
Net book value	231	229
Computers
Property, Plant and Equipment [Line Items]
Cost	27,660	24,951
Less: Accumulated depreciation	(20,520)	(17,873)
Less: Impairment reserve	0	0
Net book value	7,140	7,078
Construction and Machinery Under Installation
Property, Plant and Equipment [Line Items]
Cost	12,243	15,450
Less: Accumulated depreciation	0	0
Less: Impairment reserve	0	0
Net book value	$ 12,243	$ 15,450