Income Taxes	9 Months Ended
Oct. 02, 2020
Income Tax Disclosure [Abstract]
Income Taxes	13. Income Taxes The Company determines its estimated annual effective tax rate at the end of each interim period based on full-year forecasted pre-tax income and facts known at that time. The estimated annual effective tax rate is applied to the year-to-date pre-tax income at the end of each interim period with the cumulative effect of any changes in the estimated annual effective tax rate being recorded in the fiscal quarter in which the change is determined. The tax effect of significant unusual items is reflected in the period in which they occur. Since the Company is incorporated in Canada, it is required to use Canada’s statutory tax rate of 29.0% in the determination of the estimated annual effective tax rate. The Company maintains a valuation allowance on balances of certain U.S. state net operating losses and certain non-U.S. tax attributes that the Company has determined are more likely than not to be realized. A valuation allowance is required when, based upon an assessment of various factors, including recent operating loss history, anticipated future earnings, and prudent and reasonable tax planning strategies, it is more likely than not that some portion of the deferred tax assets will not be realized. In conjunction with the Company’s ongoing review of its actual results and anticipated future earnings, the Company continuously reassesses the possibility of releasing the valuation allowance currently in place on its deferred tax assets. For the nine months ended October 2, 2020, in part because the Company achieved three years of cumulative taxable income in the Canadian jurisdiction, the Company determined that it is more likely than not that a portion of its Canadian net operating losses are realizable. Therefore, the Company reduced $1.1 million of the valuation allowance against its deferred tax assets during the nine months ended October 2, 2020. The Company’s Canadian entity serves as a holding company with limited amounts of income and expenses. The amount of the deferred tax asset considered realizable could be adjusted if estimates of future taxable income in the carryforward period are reduced or increased. The Company’s effective tax rate of 17.6% for the three months ended October 2, 2020 differs from the Canadian statutory tax rate of 29.0% primarily due to the mix of income earned in jurisdictions with varying tax rates, estimated deductions for Foreign Derived Intangible Income, U.K. patent box deductions and other tax credits. The Company’s effective tax rate of 5.2% for the nine months ended October 2, 2020 differs from the Canadian statutory tax rate of 29.0% primarily due to the mix of income earned in jurisdictions with varying tax rates, estimated deductions for Foreign Derived Intangible Income, U.K. patent box deductions, other tax credits, windfall tax benefits upon vesting of certain share-based compensation awards during the period, and a release of a portion of the valuation allowance on the deferred tax assets in Canada. For the nine months ended October 2, 2020, the windfall tax benefits upon vesting of certain share-based compensation awards and the valuation allowance release had a benefit of 7.9% and 3.3%, respectively, on the Company’s effective tax rate. The Company’s effective tax rate of 18.8% for the three months ended September 27, 2019 differs from the Canadian statutory tax rate of 29.0% primarily due to the mix of income earned in jurisdictions with varying tax rates, estimated deductions for Foreign Derived Intangible Income, U.K. patent box deductions and other tax credits. The Company’s effective tax rate of 12.9% for the nine months ended September 27, 2019 differs from the Canadian statutory tax rate of 29.0% primarily due to the mix of income earned in jurisdictions with varying tax rates, estimated deductions for Foreign Derived Intangible Income, U.K. patent box deductions, other tax credits, and windfall tax benefits upon vesting of certain share-based compensation awards during the period. For the nine months ended September 27, 2019, the windfall tax benefits upon vesting of certain share-based compensation awards had a benefit of 7.4% on the Company’s effective tax rate. On March 27, 2020, the U.S. federal government enacted the Coronavirus Aid, Relief, and Economic Security Act (the “CARES Act”) in response to the COVID-19 pandemic. The CARES Act is an emergency economic stimulus package which, among other things, contains numerous provisions concerning income taxes. The CARES Act will not have a material impact on the Company’s income taxes or related disclosures.

Income Taxes

9 Months Ended

Oct. 02, 2020

13. Income Taxes

The Company determines its estimated annual effective tax rate at the end of each interim period based on full-year forecasted pre-tax income and facts known at that time. The estimated annual effective tax rate is applied to the year-to-date pre-tax income at the end of each interim period with the cumulative effect of any changes in the estimated annual effective tax rate being recorded in the fiscal quarter in which the change is determined. The tax effect of significant unusual items is reflected in the period in which they occur. Since the Company is incorporated in Canada, it is required to use Canada’s statutory tax rate of 29.0% in the determination of the estimated annual effective tax rate.

The Company maintains a valuation allowance on balances of certain U.S. state net operating losses and certain non-U.S. tax attributes that the Company has determined are more likely than not to be realized. A valuation allowance is required when, based upon an assessment of various factors, including recent operating loss history, anticipated future earnings, and prudent and reasonable tax planning strategies, it is more likely than not that some portion of the deferred tax assets will not be realized. In conjunction with the Company’s ongoing review of its actual results and anticipated future earnings, the Company continuously reassesses the possibility of releasing the valuation allowance currently in place on its deferred tax assets. For the nine months ended October 2, 2020, in part because the Company achieved three years of cumulative taxable income in the Canadian jurisdiction, the Company determined that it is more likely than not that a portion of its Canadian net operating losses are realizable. Therefore, the Company reduced $1.1 million of the valuation allowance against its deferred tax assets during the nine months ended October 2, 2020. The Company’s Canadian entity serves as a holding company with limited amounts of income and expenses. The amount of the deferred tax asset considered realizable could be adjusted if estimates of future taxable income in the carryforward period are reduced or increased.

The Company’s effective tax rate of 17.6% for the three months ended October 2, 2020 differs from the Canadian statutory tax rate of 29.0% primarily due to the mix of income earned in jurisdictions with varying tax rates, estimated deductions for Foreign Derived Intangible Income, U.K. patent box deductions and other tax credits.

The Company’s effective tax rate of 5.2% for the nine months ended October 2, 2020 differs from the Canadian statutory tax rate of 29.0% primarily due to the mix of income earned in jurisdictions with varying tax rates, estimated deductions for Foreign Derived Intangible Income, U.K. patent box deductions, other tax credits, windfall tax benefits upon vesting of certain share-based compensation awards during the period, and a release of a portion of the valuation allowance on the deferred tax assets in Canada. For the nine months ended October 2, 2020, the windfall tax benefits upon vesting of certain share-based compensation awards and the valuation allowance release had a benefit of 7.9% and 3.3%, respectively, on the Company’s effective tax rate.

The Company’s effective tax rate of 18.8% for the three months ended September 27, 2019 differs from the Canadian statutory tax rate of 29.0% primarily due to the mix of income earned in jurisdictions with varying tax rates, estimated deductions for Foreign Derived Intangible Income, U.K. patent box deductions and other tax credits.

The Company’s effective tax rate of 12.9% for the nine months ended September 27, 2019 differs from the Canadian statutory tax rate of 29.0% primarily due to the mix of income earned in jurisdictions with varying tax rates, estimated deductions for Foreign Derived Intangible Income, U.K. patent box deductions, other tax credits, and windfall tax benefits upon vesting of certain share-based compensation awards during the period. For the nine months ended September 27, 2019, the windfall tax benefits upon vesting of certain share-based compensation awards had a benefit of 7.4% on the Company’s effective tax rate.

On March 27, 2020, the U.S. federal government enacted the Coronavirus Aid, Relief, and Economic Security Act (the “CARES Act”) in response to the COVID-19 pandemic. The CARES Act is an emergency economic stimulus package which, among other things, contains numerous provisions concerning income taxes. The CARES Act will not have a material impact on the Company’s income taxes or related disclosures.

- Definition

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

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