Quarterly report pursuant to Section 13 or 15(d)

7. Stock-Based Compensation (Tables)

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7. Stock-Based Compensation (Tables)
3 Months Ended
Jun. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract]  
Share-based compensation expense
    Three Months Ended June 30,  
    2018     2017  
Cost of revenues   $ 35,000     $ 44,000  
Research and development     32,000       45,000  
Selling, general and administrative     280,000       349,000  
Total stock-based compensation   $ 347,000     $ 438,000  
Schedule of option activity
   

Number of

Shares

   

Weighted-

Average

Exercise Price

   

Weighted-

Average

Contractual Term

   

Aggregate

Intrinsic

Value

 
Outstanding at April 1, 2018     1,393,000     $ 12.70                  
Options granted     24,000       3.94                  
Options forfeited     (5,000 )     6.90                  
Options expired     (1,000 )     7.02                  
Outstanding at June 30, 2018     1,411,000     $ 12.58       7.22     $  
Exercisable at June 30, 2018     957,000     $ 15.55       6.52     $  
Restricted Stock Award Activity
   

Number of

Shares

   

Weighted

Average Award

Date Fair Value

per Share

 
Unvested restricted stock awards outstanding at April 1, 2018     32,000     $ 6.46  
Restricted stock awards granted     4,000       3.86  
Restricted stock awards vested     (15,000 )     5.50  
Unvested restricted stock awards outstanding at June 30, 2018     21,000     $ 6.64