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Note 10 - Fair Value Measurement
3 Months Ended
Mar. 31, 2021
Notes to Financial Statements  
Fair Value Disclosures [Text Block]
10.
       
Fair value measurement:
 
The following table sets forth the fair value of the Company's financial assets and liabilities measured at fair value on a recurring basis based on the
three
-tier fair value hierarchy.
 
   
Level 1
   
Level 2
   
Level 3
   
Total
 
As at March 31, 2021
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Assets
                               
Cash
  $
1,611,592
    $
-
    $
-
    $
1,611,592
 
Long term cash equivalent
   
31,766
     
-
     
-
     
31,766
 
Total assets measured and recorded at fair value
  $
1,643,358
    $
-
    $
-
    $
1,643,358
 
 
   
Level 1
   
Level 2
   
Level 3
   
Total
 
As at December 31, 2020
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Assets
                               
Cash
  $
1,226,045
    $
-
    $
-
    $
1,226,045
 
Long term cash equivalent
   
31,392
     
-
     
-
     
31,392
 
Total assets measured and recorded at fair value
  $
1,257,437
    $
-
    $
-
    $
1,257,437