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Note 9 - Income Taxes (Tables)
12 Months Ended
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