CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 29, 2024	Mar. 31, 2023	Mar. 29, 2024	Mar. 31, 2023
Income Statement [Abstract]
Revenues	$ 731,535	$ 665,281	$ 2,129,706	$ 1,989,366
Cost of revenues	(640,600)	(579,274)	(1,866,037)	(1,735,388)
Gross profit	90,935	86,007	263,669	253,978
Selling, general and administrative expenses	(19,628)	(18,309)	(59,373)	(57,804)
Restructuring and other related costs	0	(5,872)	0	(5,872)
Operating income	71,307	61,826	204,296	190,302
Interest income	8,509	3,317	22,155	7,210
Interest expense	(26)	(399)	(107)	(1,179)
Foreign exchange gain (loss), net	3,348	(1,303)	(25)	(3,122)
Other income (expense), net	175	31	60	(178)
Income before income taxes	83,313	63,472	226,379	193,033
Income tax expense	(2,397)	(4,117)	(11,264)	(5,906)
Net income	80,916	59,355	215,115	187,127
Other comprehensive income (loss), net of tax:
Change in net unrealized gain (loss) on available-for-sale securities	(1,739)	2,046	2,155	1,768
Change in net unrealized gain (loss) on derivative instruments	(7,328)	(5,535)	1,062	4,435
Change in net retirement benefits plan – prior service cost	137	113	271	338
Change in foreign currency translation adjustment	75	(191)	(31)	(29)
Total other comprehensive income (loss), net of tax	(8,855)	(3,567)	3,457	6,512
Net comprehensive income	$ 72,061	$ 55,788	$ 218,572	$ 193,639
Earnings per share
Basic (in USD per share)	$ 2.23	$ 1.62	$ 5.93	$ 5.12
Diluted (in USD per share)	$ 2.21	$ 1.60	$ 5.88	$ 5.07
Weighted-average number of ordinary shares outstanding (thousands of shares)
Basic (in shares)	36,250	36,608	36,278	36,575
Diluted (in shares)	36,603	36,989	36,574	36,895