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Note 7 - Stock-based Compensation (Tables)
6 Months Ended
Jul. 31, 2020
Notes Tables  
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]
   
Three Months Ended July 31,
   
Six Months Ended July 31,
 
   
2020
   
2019
   
2020
   
2019
 
Stock-based compensation expense
  $
1
    $
3
    $
3
    $
8
 
Restricted stock-based compensation expense
   
259
     
403
     
476
     
552
 
Total stock-based compensation expense
  $
260
    $
406
    $
479
    $
560
 
Share-based Payment Arrangement, Option, Activity [Table Text Block]
Option activity
 
No. of Shares Underlying Options
   
Weighted Average Exercise Price
   
Weighted Average Remaining Contractual Term
   
Aggregate Intrinsic Value
 
Outstanding at January 31, 2020
   
132
    $
8.98
     
3.2
    $
160
 
Exercised    
-
     
-
     
-
     
-
 
Expired or forfeited    
(13
)    
-
     
-
     
-
 
Outstanding at July 31, 2020
   
119
     
9.20
     
2.9
     
4
 
                                 
Exercisable at July 31, 2020
   
119
    $
9.20
     
2.9
    $
4
 
Schedule of Nonvested Share Activity [Table Text Block]
Unvested option activity
 
No. of Shares Underlying Options
   
Weighted Average Grant Date Fair Value
   
Aggregate Intrinsic Value
 
Outstanding at January 31, 2020
   
3
    $
7.33
    $
4
 
Vested    
(3
)    
-
     
-
 
Expired or forfeited    
-
     
-
     
-
 
Outstanding at July 31, 2020
   
-
    $
-
    $
-
 
Share-based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block]
Restricted stock activity
 
Restricted Shares
   
Weighted Average Grant Price Per Share
   
Aggregate Intrinsic Value
 
Outstanding at January 31, 2020
   
321
    $
8.89
    $
2,857
 
Granted
   
156
     
5.88
     
 
 
Vested and issued    
(63
)    
8.96
     
 
 
Forfeited or retired for taxes
   
(36
)    
8.72
     
 
 
Outstanding at July 31, 2020
   
378
    $
7.63
    $
2,884