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Note 7 - Accrued Liabilities (Tables)
6 Months Ended
Jul. 31, 2016
Notes Tables  
Schedule of Accrued Liabilities [Table Text Block]
 
 
July 31,
 
 
January 31,
 
 
 
2016
 
 
2016
 
                 
Uninvoiced materials and services received
  $ 7     $ 331  
Accrued legal and professional fees
    71       169  
Accrued payroll and related expenses
    36       33  
Consulting
    65       16  
Other
    146       138  
    $ 325     $ 687