XML 47 R27.htm IDEA: XBRL DOCUMENT v2.4.0.6
Stockholders' Equity (Details 2) (USD $)
 3 Months Ended 6 Months Ended 12 Months Ended
Mar. 31, 2013
Mar. 31, 2013
Sep. 30, 2012
Mar. 31, 2012
Stock option activity under the Company's equity plans        
Number of Shares, beginning balance   3,512,286   3,907,535
Weighted Average Exercise Price Per Share, beginning balance   $ 3.39    
Weighted Average Remaining Contractual Term, beginning balance 7 years 7 months 13 days 7 years 7 months 13 days 6 years 5 months 16 days  
Number of Shares, Granted   441,563    
Weighted Average Exercise Price Per Share, Granted   $ 2.68    
Number of Shares, Exercised   (1,091,613)    
Weighted Average Exercise Price Per Share, Exercised   $ 0.90    
Number of Shares, Cancelled   (189,478)    
Weighted Average Exercise Price Per Share, Cancelled   $ 7.03    
Number of Shares, ending balance 2,672,758 2,672,758 3,512,286 3,907,535
Weighted Average Exercise Price Per Share, ending balance $ 4.03 $ 4.03 $ 3.39  
Weighted Average Remaining Contractual Term, ending balance 7 years 7 months 13 days 7 years 7 months 13 days 6 years 5 months 16 days