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Note 11 - Stock Based Compensation and Other Plans (Tables)
12 Months Ended
Dec. 31, 2019
Notes Tables  
Share-based Payment Arrangement, Option, Activity [Table Text Block]
     
 
 
   
 
 
 
Weighted-
     
 
 
     
 
 
 
Weighted-
   
Average
   
Aggregate
 
     
 
 
 
Average
   
Remaining
   
Intrinsic
 
     
 
   
Exercise
   
Contractual
   
Value
 
Option Awards
 
Shares
   
Price
   
Term (Years)
   
(thousands)
 
Outstanding at January 1, 2018
   
3,344,177
    $
0.96
     
5.17
    $
1,221
 
Granted
   
45,000
     
1.67
     
     
 
Exercised/cancelled
   
306,750
     
0.40
     
     
 
Forfeited or expired
   
37,500
     
     
     
 
Outstanding at December 31, 2018
   
3,044,927
    $
1.01
     
4.55
    $
103
 
Granted
   
     
     
     
 
Exercised
   
804,580
     
0.44
     
     
 
Forfeited or expired
   
13,136
     
     
     
 
Outstanding at December 31, 2019
   
2,227,211
    $
1.22
     
4.83
    $
452
 
Exercisable at December 31, 2019
   
1,723,961
    $
1.27
     
4.06
    $
321
 
     
 
 
   
 
 
 
Weighted-
     
 
 
     
 
 
 
Weighted-
   
Average
   
Aggregate
 
     
 
 
 
Average
   
Remaining
   
Intrinsic
 
     
 
   
Exercise
   
Contractual
   
Value
 
Option Awards
 
Shares
   
Price
   
Term (Years)
   
(thousands)
 
Outstanding at January 1, 2018    
     
     
     
 
Granted
   
245,000
     
1.23
     
     
 
Exercised/cancelled
   
     
     
     
 
Forfeited or expired
   
10,000
     
     
     
 
Outstanding at December 31, 2018    
235,000
    $
1.23
     
9.35
    $
-
 
Granted    
320,000
     
0.64
     
     
 
Exercised
   
     
     
     
 
Forfeited or expired    
     
     
     
 
Outstanding at December 31, 2019
   
555,000
    $
0.89
     
8.88
    $
6
 
Exercisable at December 31, 2019
   
88,750
    $
1.23
     
8.35
    $
6
 
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
   
2019
 
2018
Expected volatility
 
39.0%
 
43.0%
Expected dividend yields
 
0.0%
 
0.0%
Expected term (in years)
 
3
 
5
Risk free interest rate
 
2.3%
 
2.5%
Expected forfeiture rate
 
5.0%
 
5.0%
Share-based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block]
     
 
 
 
Weighted-
 
     
 
 
 
Average
 
     
 
 
 
Grant Date
 
     
 
 
 
Fair Value
 
   
Shares
   
per Share
 
Unvested at January 1, 2018
   
68,400
    $
1.38
 
Granted
   
     
 
Vested
   
(18,900
)    
1.48
 
Forfeited
   
(48,500
)    
1.35
 
Unvested at December 31, 2018
   
1,000
     
1.36
 
Granted
   
     
 
Vested
   
(1,000
)    
1.36
 
Forfeited
   
     
 
Unvested at December 31, 2019
   
    $
-
 
     
 
 
 
Weighted-
 
     
 
 
 
Average
 
     
 
 
 
Grant Date
 
     
 
 
 
Fair Value
 
   
Shares
   
per Share
 
Unvested at January 1, 2018    
20,000
    $
1.23
 
Granted
   
     
 
Vested
   
(10,000
)    
1.23
 
Forfeited
   
     
 
Unvested at December 31, 2018    
10,000
     
1.23
 
Granted    
     
 
Vested    
(10,000
)    
1.23
 
Forfeited    
     
 
Unvested at December 31, 2019
   
    $
-