Accumulated other comprehensive income (loss) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 29, 2024	Mar. 31, 2023	Mar. 29, 2024	Mar. 31, 2023
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 1,611,382	$ 1,384,131	$ 1,468,658	$ 1,253,682
Other comprehensive income (loss) before reclassification			3,363	9,408
Amounts reclassified out of AOCI to the unaudited condensed consolidated statements of operations and comprehensive income			(234)	(2,896)
Tax effects			328	0
Total other comprehensive income (loss), net of tax	(8,855)	(3,567)	3,457	6,512
Ending balance	1,660,235	1,441,581	1,660,235	1,441,581
Unrealized net (Losses)/Gains on Available-for-sale Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			(3,279)	(6,018)
Other comprehensive income (loss) before reclassification			2,154	1,675
Amounts reclassified out of AOCI to the unaudited condensed consolidated statements of operations and comprehensive income			1	93
Tax effects			0	0
Total other comprehensive income (loss), net of tax			2,155	1,768
Ending balance	(1,124)	(4,250)	(1,124)	(4,250)
Unrealized net (Losses)/Gains on Derivative Instruments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			(3,541)	(5,082)
Other comprehensive income (loss) before reclassification			1,240	7,762
Amounts reclassified out of AOCI to the unaudited condensed consolidated statements of operations and comprehensive income			(485)	(3,327)
Tax effects			307	0
Total other comprehensive income (loss), net of tax			1,062	4,435
Ending balance	(2,479)	(647)	(2,479)	(647)
Retirement benefit plan - Prior service cost
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			(330)	(803)
Other comprehensive income (loss) before reclassification			0	0
Amounts reclassified out of AOCI to the unaudited condensed consolidated statements of operations and comprehensive income			250	338
Tax effects			21	0
Total other comprehensive income (loss), net of tax			271	338
Ending balance	(59)	(465)	(59)	(465)
Foreign Currency Translation Adjustment
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			(965)	(890)
Other comprehensive income (loss) before reclassification			(31)	(29)
Amounts reclassified out of AOCI to the unaudited condensed consolidated statements of operations and comprehensive income			0	0
Tax effects			0	0
Total other comprehensive income (loss), net of tax			(31)	(29)
Ending balance	(996)	(919)	(996)	(919)
AOCI Attributable to parent
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	4,197	(2,714)	(8,115)	(12,793)
Total other comprehensive income (loss), net of tax	(8,855)	(3,567)	3,457	6,512
Ending balance	$ (4,658)	$ (6,281)	$ (4,658)	$ (6,281)