CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 25, 2022	Mar. 26, 2021	Mar. 25, 2022	Mar. 26, 2021
Income Statement [Abstract]
Revenues	$ 564,395	$ 479,317	$ 1,674,350	$ 1,369,783
Cost of revenues	(493,702)	(422,539)	(1,470,689)	(1,209,504)
Gross profit	70,693	56,778	203,661	160,279
Selling, general and administrative expenses	(17,034)	(19,059)	(55,412)	(53,078)
Expenses related to reduction in workforce	0	(43)	(135)	(43)
Operating income	53,659	37,676	148,114	107,158
Interest income	414	941	1,470	3,156
Interest expense	(73)	(282)	(347)	(798)
Foreign exchange gain (loss), net	(410)	629	998	224
Other income (expense), net	(36)	124	(1,351)	403
Income before income taxes	53,554	39,088	148,884	110,143
Income tax expense	(2,893)	(1,595)	(4,693)	(4,215)
Net income	50,661	37,493	144,191	105,928
Other comprehensive income (loss), net of tax:
Change in net unrealized gain (loss) on available-for-sale securities	(2,455)	(570)	(3,615)	(937)
Change in net unrealized gain (loss) on derivative instruments	666	(5,000)	2,743	(5,823)
Change in net retirement benefits plan – prior service cost	124	198	448	421
Change in foreign currency translation adjustment	(34)	90	(198)	547
Total other comprehensive income (loss), net of tax	(1,699)	(5,282)	(622)	(5,792)
Net comprehensive income (loss)	$ 48,962	$ 32,211	$ 143,569	$ 100,136
Earnings per share
Basic (in USD per share)	$ 1.37	$ 1.02	$ 3.90	$ 2.87
Diluted (in USD per share)	$ 1.35	$ 1.00	$ 3.85	$ 2.82
Weighted-average number of ordinary shares outstanding (thousands of shares)
Basic (in shares)	36,940	36,875	36,945	36,876
Diluted (in shares)	37,473	37,609	37,451	37,514