v3.23.1

Share-based compensation - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Mar. 31, 2023	Mar. 25, 2022	Mar. 31, 2023	Mar. 25, 2022	Jun. 24, 2022	Jun. 25, 2021	Dec. 12, 2019	Nov. 02, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation costs capitalized	$ 0	$ 0	$ 0	$ 0
Number of ordinary shares available for future grant (in shares)	2,069,550		2,069,550
Shares authorized for future issuance (in shares)							1,281,619
Shares withheld to settle employee minimum statutory obligation for applicable income and other employment taxes (in shares)			172,929	210,006
Tax withholdings related to net share settlement of restricted share units			$ 17,740,000	$ 20,439,000
Equity Incentive 2020 plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of ordinary shares available for future grant (in shares)							1,700,000
Shares reserved for future issuance (in shares)							1,300,000
2020 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of ordinary shares available for future grant (in shares)	1,958,203		1,958,203
2010 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of ordinary shares available for future grant (in shares)	0		0
2017 Inducement Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of ordinary shares available for future grant (in shares)	111,347		111,347
Shares authorized for future issuance (in shares)								160,000
Restricted share units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share units outstanding (in shares)	374,038	460,928	374,038	460,928	459,626	641,875
Unrecognized share-based compensation expense	$ 15,100,000		$ 15,100,000
Unrecognized compensation expense, weighted-average period for recognition			2 years 7 months 6 days
Restricted share units | 2020 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share units outstanding (in shares)	343,211		343,211
Restricted share units | 2010 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share units outstanding (in shares)	30,827		30,827
Restricted share units | 2017 Inducement Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share units outstanding (in shares)	0		0
Restricted share units | Vesting option one
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award granted vesting period, year			3 years
Restricted share units | Vesting option two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award granted vesting period, year			4 years
Restricted share units | Non-employee director
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award granted vesting period, year			1 year
Restricted share units | Non-employee director | Vest on the first of January
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage			100.00%
Performance share units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share units outstanding (in shares)	204,016	285,882	204,016	285,882	285,882	427,028
Unrecognized share-based compensation expense	$ 9,400,000		$ 9,400,000
Unrecognized compensation expense, weighted-average period for recognition			1 year 2 months 12 days
Performance share units | 2020 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share units outstanding (in shares)	204,016		204,016
Performance share units | 2010 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share units outstanding (in shares)	0		0
Performance share units | 2017 Inducement Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share units outstanding (in shares)	0		0
Performance share units | Executive of the Company
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award granted vesting period, year			2 years
Performance share units | Executive of the Company | Vest at the end of the performance period | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage			0.00%
Performance share units | Executive of the Company | Vest at the end of the performance period | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage			100.00%

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Aggregate number of common shares reserved for future issuance.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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