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STOCK PLANS AND STOCK-BASED COMPENSATION (Tables)
3 Months Ended
Jun. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of stock options outstanding
   
Three Months Ended
June 30, 2018
   
Three Months Ended
June 30, 2017
 
   
Number of
Shares
   
Weighted
Average
Exercise
Price
   
Number of
Shares
   
Weighted
Average
Exercise
Price
 
Balance, beginning of period
   
141,365
   
$
3.77
     
220,654
   
$
4.74
 
Options exercised
   
-
     
-
     
(16,511
)
   
4.19
 
Expired
   
(2,500
)
   
8.12
     
(5,000
)
   
14.52
 
Balance, end of period
   
138,865
   
$
3.69
     
199,143
   
$
4.54
 
Schedule of stock options outstanding, less estimated forfeitures
             
   
2018
   
2017
 
Stock options fully vested and expected to vest:
           
Number
   
138,865
     
199,143
 
Weighted average exercise price
 
$
3.69
   
$
4.54
 
Aggregate intrinsic value (1)
 
$
660,000
   
$
518,000
 
Weighted average contractual term of options (years)
   
2.57
     
3.25
 
Stock options fully vested and currently exercisable:
               
Number
   
138,865
     
199,143
 
Weighted average exercise price
 
$
3.69
   
$
4.54
 
Aggregate intrinsic value (1)
 
$
660,000
   
$
518,000
 
Weighted average contractual term of options (years)
   
2.57
     
3.25
 
                 
         (1) The aggregate intrinsic value of a stock option in the table above represents the total pre-tax intrinsic value (the amount by which the current market value of the underlying stock exceeds the exercise price) that would have been received by the option holders had all option holders exercised. This amount changes based on changes in the market value of the Company's stock.