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Note 22 - Income Taxes (Tables)
12 Months Ended
Jul. 31, 2023
Notes Tables  
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
  

Year Ended July 31,

 
  

2023

  

2022

  

2022

 

Federal income tax provision rate

  21.00%  21.00%  21.00%

State income tax provision rate, net of federal income tax effect

  2.89%  2.95%  0.83%

Total income tax provision rate

  23.89%  23.95%  21.83%
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
  

Year Ended July 31,

 
  

2023

  

2022

  

2022

 

Income (Loss) before income taxes

 $(2,437) $5,247  $(14,817)

Corporate tax rate

  23.89%  23.95%  21.83%

Expected tax expense (recovery)

  (582)  1,257   (3,235)

Increase (decrease) resulting from

            

Foreign tax rate differences

  (83)  158   77 

Permanent differences

  1,486   (326)  (217)

Prior year true-up

  (464)  6   (270)

Change in state tax rate

  (182)  (460)  (406)

Foreign exchange rate differences

  1,687   (4)  (56)

Other

  1,138   188   163 

Change in valuation allowance

  (2,130)  (824)  3,940 

Deferred tax expense (recovery)

 $870  $(5) $(4)
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]
  

Year Ended July 31,

 
  

2023

  

2022

  

2022

 

United States

 $5,192  $6,054  $(14,297)

Canada

  (6,720)  268   94 

Paraguay

  (909)  (1,075)  (614)
  $(2,437) $5,247  $(14,817)
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
  

July 31, 2023

  

July 31, 2022

 

Deferred tax assets (liabilities)

        

Mineral properties

 $2,191  $1,401 

Exploration costs

  1,774   1,875 

Stock option expense

  3,628   4,651 

Depreciable property

  1,115   1,078 

Inventories

  (3,909)  (3,955)

Asset retirement obligations

  3,130   2,924 

Other

  (2,389)  654 

Section 163(j) interest expense carry forwards

  4,160   2,040 

Loss carry forwards

  68,661   70,162 
   78,361   80,830 

Valuation allowance

  (78,361)  (80,830)

Deferred tax assets

  -   - 
         

Deferred tax liabilities

        

Mineral properties

  (71,080)  (536)

Net deferred tax liabilities

 $(71,080) $(536)
Summary of Operating Loss Carryforwards [Table Text Block]

July 31, 2024

 $2,519 

July 31, 2025

  4,831 

July 31, 2026

  8,461 

July 31, 2027

  6,907 

July 31, 2028

  11,777 

Between July 31, 2009 and 2037

  165,665 

No expiry

  90,364 
  $290,524 

July 31, 2027

 $183 

July 31, 2028

  2,089 

July 31, 2029

  3,436 

July 31, 2030

  2,406 

July 31, 2031

  2,673 

Remaining balance

  35,161 
  $45,948