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Income Taxes - Disclosure Detailed Information About Components Of Tax Expense Income (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018
Major components of tax expense (income) [abstract] |  |
Loss before income taxes | $ (13,186) | $ (37,070)
Canadian federal and provincial income tax rates | 27.00% | 27.00%
Expected income tax recovery based on the above rates | $ (3,560) | $ (10,009)
Non-deductible expenses | 3,000 | 3,250
Non-taxable bargain purchase gain from Mesquite Acquisition |  | (176)
Impairment and disposition of Elk Gold | 536 | 2,679
Change in fair value of derivative liabilities | 10,310 | (5,394)
Repayment of long-term debt | 1,448 |
Deconsolidation of Solaris | 1,008 |
Disposition of discontinued operation |  | (3,761)
Tax effect of deferred tax assets for which no tax benefit has been recognized | 5,238 | 8,097
Foreign exchange and other | (10,842) | 7,649
Total tax expense | 7,138 | 2,335
Current tax expense | 7,250 | 468
Deferred tax expense (recovery) | (112) | 1,867
Total tax expense | $ 7,138 | $ 2,335

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