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Note 3 - Stock-Based Compensation (Tables)
3 Months Ended
Jun. 30, 2012
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]
   
Number
Of
Shares
   
Weighted
Average
Exercise
Price Per
Share
   
Weighted Average
Remaining
Contractual
Term (in years)
   
Aggregate
Intrinsic
Value
 
Outstanding as of March 31, 2012
    597     $ 5.94                  
Granted
    -       -                  
Exercised
    (10 )     4.03                  
Cancelled/Forfeited
    (20 )     6.65                  
Outstanding as of June 30, 2012
    567       5.95       4     $ 516  
Exercisable as of June 30, 2012
    560       5.94       4       516