Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity (Details 5)

v2.4.0.8
Stockholders' Equity (Details 5) (USD $)
0 Months Ended 1 Months Ended 12 Months Ended 0 Months Ended 0 Months Ended 1 Months Ended 12 Months Ended 0 Months Ended 12 Months Ended 0 Months Ended 12 Months Ended 0 Months Ended 12 Months Ended 0 Months Ended
Sep. 18, 2012
item
investors
Sep. 30, 2012
Mar. 31, 2012
Mar. 31, 2014
Mar. 31, 2013
Mar. 31, 2012
Mar. 05, 2012
Sep. 18, 2012
Minimum
Nov. 21, 2011
Exercise of September 2009 Warrants, the 2008 Warrants and the 2007 Warrants
Nov. 21, 2011
Warrants exercised on November 21, 2011
Oct. 31, 2013
March 2012
Mar. 31, 2012
March 2012
Mar. 31, 2014
March 2012
Mar. 31, 2013
March 2012
Jan. 09, 2012
January 2007
item
Nov. 21, 2011
January 2007
item
Mar. 31, 2012
January 2007
Mar. 31, 2011
January 2007
Nov. 21, 2011
September 2009
item
Mar. 31, 2012
September 2009
Mar. 31, 2011
September 2009
Nov. 21, 2011
September 2008
item
Mar. 31, 2012
September 2008
Mar. 31, 2013
September 2008
Mar. 31, 2011
September 2008
Nov. 21, 2011
September 2008
Warrants exercised on November 22, 2011
Stockholders' Equity                                                    
Common stock sold (in shares)     22,600,000                                              
Common stock, par value (in dollars per share)       $ 0.001 $ 0.001   $ 0.001                                      
Number of shares of common stock under warrants issued             22,600,000     5,800,000         1,600,000 5,200,000           2,400,000       500,000
Exercise price (in dollars per share) $ 1.26       $ 1.41   $ 1.55               $ 1.17 $ 1.17     $ 1.34     $ 1.60       $ 1.60
Number of investors with whom Investor Agreement entered 1                                                  
Warrant unit price (in dollars per shares)     $ 1.11                                              
Right to purchase maximum additional number of shares of common stock under put option       19,000,000                                            
Number of trading days prior to the exercise of put option     30 days                                              
Expenses incurred upon the exercise of warrants                       $ 1,900,000                            
Number of shares of common stock in each unit     1                                              
Number of shares of common stock in each warrant     1                                              
Arithmetic average of the average daily trading volumes on the exercise date (in shares)               1,750,000                                    
Purchase price of additional shares determined pursuant to the Investor Agreement (in dollars per share) $ 0.94                                                  
Proceeds from exercise of warrants   4,200,000             8,400,000   6,000,000       1,600,000                     400,000
Number of warrants exercised (in shares)                     4,700,000   4,725,000       7,298,234     5,780,347     3,579,239      
Proceeds from issuance of warrants       5,954,000 4,250,000 11,403,000           23,100,000                            
Number of Put Options 2                                                  
Number of holders of warrants                             2 6     2     4        
Outstanding warrants (in shares)         22,600,000             22,550,000   22,550,000       8,535,574     5,780,347   3,910,034 3,961,471 7,342,647  
Fee on exercise of warrants                             $ 300,000 $ 1,800,000     $ 5,400,000     $ 2,200,000       $ 500,000