Quarterly report pursuant to Section 13 or 15(d)

7. Stock-Based Compensation (Tables)

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7. Stock-Based Compensation (Tables)
 6 Months Ended
Sep. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract]  
Share-based compensation expense
    Three Months     Six Months  
    Ended     Ended  
    September 30,     September 30,  
    2018     2017     2018     2017  
Cost of service revenue   $ 30,000     $ 49,000     $ 65,000     $ 93,000  
Research and development     29,000       45,000       61,000       90,000  
Selling, general and administrative     467,000       333,000       747,000       682,000  
Total stock-based compensation   $ 526,000     $ 427,000     $ 873,000     $ 865,000  
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     159,000       2.64                  
Options forfeited     (33,000 )     6.70                  
Options expired     (3,000 )     18.44                  
Outstanding at September 30, 2018     1,516,000     $ 11.76       7.02     $ –  
Exercisable at September 30, 2018     1,109,000     $ 13.75       6.48     $ –  
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     28,000       1.90  
Restricted stock awards forfeited     (4,000 )     6.97  
Restricted stock awards vested     (16,000 )     5.50  
Unvested restricted stock awards outstanding at September 30, 2018     40,000     $ 3.71