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, 2014
Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract]  
Employee stock-based compensation expense
    Three Months Ended
June 30, 		 
    2014     2013  
Cost of revenues   $ 64,000     $ 25,000  
Research and development     96,000       33,000  
Selling, general and administrative     291,000       128,000  
Total stock-based compensation   $ 451,000     $ 186,000  
Summary of option activity
    Number of
Shares 		    Weighted-
Average
Exercise Price 		    Weighted-
Average
Contractual Term 		    Aggregate
Intrinsic
Value 		 
Outstanding at April 1, 2014     2,536,000       7.78                  
Options granted     –       –                  
Options exercised     –       –                  
Options forfeited or expired     –       –                  
Outstanding at June 30, 2014     2,536,000     $ 7.78       8.24     $ 54,000  
Exercisable at June 30, 2014     1,084,000     $ 12.82       6.46     $ 36,000  
Options available for grant as of June 30, 2014     2,252,000