Income Tax - Reconciliation of Income Tax Attributable to Operations (Detail) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
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| Income Tax Disclosure [Abstract] | |||
| Income tax recovery at statutory rates (at a rate of 21% for all years presented) | $ (3,094) | $ (3,490) | $ (2,664) |
| Expenses not deducted for tax purposes | 118 | 116 | 70 |
| Effect of tax rate changes on deferred tax assets and liabilities | 34 | (13) | (1,416) |
| Rate differential on foreign earnings | (103) | (296) | (165) |
| Investment tax credits | (23) | (84) | |
| Change in valuation allowance | 3,662 | (3,246) | 4,182 |
| Book to tax return adjustments | (518) | (75) | 20 |
| Unrecognized tax benefits | 7,192 | ||
| Reversal of previously accrued taxes due to IRS reassessment | (221) | ||
| Other | $ (76) | (104) | $ (27) |
| Income tax expense/(recovery) | $ (221) | ||
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- Definition Income tax expense (benefit) excluding adjustment for reversal of deferred tax liability. No definition available.
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- Definition Income tax reconciliation book to tax return adjustments. No definition available.
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- Definition Income tax reconciliation unrecognized tax benefits. No definition available.
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- References No definition available.
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- Definition 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 increase (decrease) in the valuation allowance for deferred tax assets. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition 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 increase (decrease) in the income tax rates. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition 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 foreign income tax expense (benefit). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition 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 nondeductible expenses. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition 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 other adjustments. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition 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 revisions of previously reported income tax expense (benefit). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition 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 investment tax credit. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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