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Employee benefit plans - Additional information (Details) - USD ($) $ in Thousands |  | 12 Months Ended
--- | --- | ---
Sep. 28, 2021 | Dec. 31, 2021 | Dec. 31, 2020
Disclosure of defined benefit plans [line items] |  |  |
Actual return on plan assets |  | $ 0 | $ 546
SERP |  |  |
Disclosure of defined benefit plans [line items] |  |  |
Proceeds from refund of retirement plan assets | $ 5,793 |  |
Percentage of money market securities |  |  | 80.00%
Percentage held by Canada Revenue Agency |  |  | 20.00%

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- Definition Percentage of other securities. + References No definition available. + Details
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- Definition Percentage of money market securities. + References No definition available. + Details
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- Definition Proceeds From Refund of Retirement Plan Assets + References No definition available. + Details
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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
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- Definition The decrease (increase) in the net defined benefit liability (asset) resulting from the return on plan assets, excluding amounts included in interest income or expense. The return on plan assets is interest, dividends and other revenue derived from the plan assets, together with realised and unrealised gains or losses on the plan assets, less any costs of managing plan assets and less any tax payable by the plan itself, other than tax included in the actuarial assumptions used to measure the present value of the defined benefit obligation. [Refer: Plan assets [member]; Net defined benefit liability (asset); Actuarial assumptions [member]; Increase (decrease) in net defined benefit liability (asset) resulting from interest expense (income)] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2021-01-01 -Paragraph 141 -Subparagraph c -Clause i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2021-en-r&anchor=para_141_c_i&doctype=Standard -URIDate 2021-03-24 + Details
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- Details
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