Severance liabilities - Schedule of Severance Liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 24, 2022	Jun. 25, 2021
Changes in severance liabilities
Balance, beginning of the fiscal year	$ 19,782	$ 17,673
Current service cost	2,318	2,177
Interest cost	518	515
Benefit paid	(322)	(1,198)
Unrealized loss (gain) on exchange rate	(2,133)	(550)
Actuarial (gain) loss on obligation	(1,542)	1,129
Foreign currency translation	(33)	36
Balance, end of the fiscal year	18,588	19,782
Changes in plan assets
Balance, beginning of the fiscal year	356	294
Actual return on plan assets	(13)	19
Employer contributions	38	43
Benefit paid	0	(34)
Foreign currency translation	(43)	34
Balance, end of the fiscal year	338	356
Underfunded status	$ (18,250)	$ (19,426)