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Note 5 - Fair Value Measurements and Financial Instruments (Tables)

v3.19.1
Note 5 - Fair Value Measurements and Financial Instruments (Tables)
6 Months Ended
Jun. 30, 2018
Notes Tables  
Fair Value, Assets Measured on Recurring Basis [Table Text Block]
      June 30,
2018
     
Level 1
     
Level 2
     
Level 3
 
Assets                                
                                 
High interest savings account   $
1,395
    $
-
    $
1,395
     
-
 
United Sates treasury bills    
5,989
     
-
     
5,989
     
-
 
Government of Canada treasury bills    
5,481
     
-
     
5,481
     
-
 
Guaranteed investment certificates, Royal Bank of Canada    
4,546
     
-
     
4,546
     
-
 
                                 
    $
17,411
    $
-
    $
17,411
    $
-
 
     
December 31,
2017
     
Level 1
     
Level 2
     
Level 3
 
                                 
Assets           $       $       $    
                                 
Canadian provincial promissory notes    
2,003
     
-
     
2,003
     
-
 
Commercial Notes    
1,999
     
 
     
1,999
     
 
 
Guaranteed income certificates, Royal Bank of Canada    
4,202
     
-
     
4,202
     
-
 
     
8,204
    $
-
    $
8,204
    $
-