Quarterly report pursuant to Section 13 or 15(d)

6. Stock-Based Compensation (Tables)

v2.4.0.8
6. Stock-Based Compensation (Tables)
 6 Months Ended
Sep. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract]  
Employee stock-based compensation expense
    Three Months     Six Months  
    Ended     Ended  
    September 30,     September 30,  
    2013     2012     2013     2012  
Cost of service revenue   $ 30     $ 34     $ 56     $ 66  
Research and development     45       63       78       130  
Selling, general and administrative     221       275       349       484  
Total stock-based compensation   $ 296     $ 372     $ 483     $ 680  
Weighted-average assumptions of fair value of employee stock options
   

Three Months

Ended

September 30,

    

Six Months

Ended

September 30,

  
    2013     2012     2013     2012  
Expected life   5.89 years     5.85 years     5.89 years     5.85 years  
Risk-free interest rate     1.42%       0.73%       1.42%       0.73%  
Dividend yield     0.00%       0.00%       0.00%       0.00%  
Volatility     86%       88%       86%       88%  
Fair value of options granted   $ 2.10     $ 4.76     $ 2.10     $ 4.76  
Summary of option activity
    Number of
Shares
(in thousands) 		    Weighted-
Average
Exercise Price 		    Weighted-
Average
Contractual 
Term 		    Aggregate
Intrinsic
Value 		 
Outstanding at March 31, 2013     975     $ 15.08                  
Options granted     335       2.95                  
Options exercised     –       –                  
Options forfeited or expired     (81 )     15.86                  
Outstanding at September 30, 2013     1,229     $ 11.72       7.42     $ –  
Exercisable at September 30, 2013     816     $ 15.32       6.35     $ –  
Options available for grant as of September 30, 2013     848