Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to research tax credit.

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Tax year that remains open to examination under enacted tax laws, in YYYY format.

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Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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Amount of unrecognized tax benefits.

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Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
Income Taxes (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Tax Credit Carryforward [Line Items]
Unclaimed Tax Deductions Related To Scientific Research And Experimental Development Expenditures	$ 129,226	$ 120,388
Non-capital losses carried forward for tax purposes	$ 295,828	197,976
Tax Credit Carry forward, Expiration Date	Dec. 31, 2042
Unrecognized tax benefits of uncertain tax positions	$ 10,850	$ 10,850
Canadian federal and provincial tax rates	27.00%	27.00%	27.00%
Canada and United States Revenue Agency [Member] \| Latest Tax Year [Member]
Tax Credit Carryforward [Line Items]
Tax year open for income tax examination	2021
Canada and United States Revenue Agency [Member] \| Earliest Tax Year [Member]
Tax Credit Carryforward [Line Items]
Tax year open for income tax examination	2002
Investment Tax credit [Member]
Tax Credit Carryforward [Line Items]
Tax credit available to offset taxes payable	$ 27,323	$ 26,298
Provincial Tax Credit [Member]
Tax Credit Carryforward [Line Items]
Tax credit available to offset taxes payable	$ 8,418	$ 8,168