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Note 9 - Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2021
Notes Tables |
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block] |
|  |  | Years Ended December 31, |
|  | 2021 |  |  | 2020 |  |  | 2019 |
United States |  | $ | 5,301 |  |  | $ | (851 | ) |  | $ | 53,971 |
Canada |  |  | (30,127 | ) |  |  | (12,553 | ) |  |  | 664,689 |
Other Foreign |  |  | (632 | ) |  |  | 577 |  |  |  | (207 | )
Total |  | $ | (25,458 | ) |  | $ | (12,827 | ) |  | $ | 718,453 |
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] |
Current |  | 2021 |  |  | 2020 |  |  | 2019 |
United States |  | $ | 17 |  |  | $ | 262 |  |  | $ | 1,806 |
Canada |  |  | (9,486 | ) |  |  | (1,821 | ) |  |  | 48,031 |
Other Foreign |  |  | 14 |  |  |  | - |  |  |  | - |
Total |  | $ | (9,455 | ) |  | $ | (1,559 | ) |  |  | 49,837 |
Deferred |  |  |  |  |  |  |  |  |  |  |  |
United States |  |  | - |  |  |  | - |  |  |  | - |
Canada |  |  | 1,505 |  |  |  | (155 | ) |  |  | (13 | )
Other Foreign |  |  | (94 | ) |  |  | 108 |  |  |  | - |
Total |  |  | 1,411 |  |  |  | (47 | ) |  |  | (13 | )
Total income tax expense |  | $ | (8,044 | ) |  | $ | (1,606 | ) |  | $ | 49,824 |
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] |
|  | 2021 |  |  | 2020 |  |  | 2019 |
Income tax benefit computed at federal tax rate |  |  | 27.0 | % |  |  | 27.0 | % |  |  | 27.0 | %
Capital gains and foreign exchange |  |  | 0.0 | % |  |  | 1.2 | % |  |  | (13.0 | )%
Change in valuation allowance |  |  | 4.1 | % |  |  | (37.3 | )% |  |  | (6.3 | )%
Tax Credits generated |  |  | 1.6 | % |  |  | 34.5 | % |  |  | - |
Prior year adjustments |  |  | 1.1 | % |  |  | 1.7 | % |  |  | (0.4 | )%
Changes in Uncertain Tax Positions |  |  | (1.5 | )% |  |  | (7.7 | )% |  |  | 0.2 | %
Stock compensation and other |  |  | (0.7 | )% |  |  | (6.9 | )% |  |  | (0.6 | )%
Total |  |  | 31.6 | % |  |  | 12.5 | % |  |  | 6.9 | %
Schedule of Deferred Tax Assets and Liabilities [Table Text Block] |
|  | 2021 |  |  | 2020 |
Deferred tax assets: |  |  |  |  |  |  |  |
Noncapital losses |  | $ | 112 |  |  | $ | 60 |
Research and other credits |  |  | 3,360 |  |  |  | 3,020 |
Stock based compensation |  |  | 3,235 |  |  |  | 4,036 |
Share issue costs |  |  | 425 |  |  |  | 610 |
Accrued liabilities |  |  | 227 |  |  |  | 194 |
Foreign Exchange |  |  | 206 |  |  |  | 950 |
Total deferred tax assets |  |  | 7,565 |  |  |  | 8,870 |
Less: Valuation allowance |  |  | (6,474 | ) |  |  | (7,585 | )
Total deferred tax asset including valuation allowance |  |  | 1,091 |  |  |  | 1,285 |
Deferred tax liabilities: |  |  |  |  |  |  |  |
Depreciation |  |  | 824 |  |  |  | 592 |
Prepaid assets |  |  | 69 |  |  |  | 52 |
Uncollectible debts |  |  | 1,057 |  |  |  | - |
Foreign exchange |  |  | 14 |  |  |  | 108 |
Total deferred tax liabilities |  |  | 1,964 |  |  |  | 752 |
Net deferred tax asset (liabilities) |  | $ | (873 | ) |  | $ | 533 |
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] |
|  | 2021 |  |  | 2020 |  |  | 2019 |
Balance as of January 1 |  |  | 2,060 |  |  |  | 1,056 |  |  |  | - |
Additions based on tax positions related to the current year |  |  | 42 |  |  |  | 49 |  |  |  | 46 |
Additions for tax positions of prior years |  |  | 287 |  |  |  | 955 |  |  |  | 1,010 |
Reductions for tax positions of prior years |  |  | - |  |  |  | - |  |  |  | - |
Settlements |  |  | - |  |  |  | - |  |  |  | - |
Balance at December 31 |  |  | 2,389 |  |  |  | 2,060 |  |  |  | 1,056 |

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- Definition Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32639-109319 + Details
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- Definition Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32537-109319 + Details
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- Definition Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32687-109319 + Details
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