XML 107 R85.htm IDEA: XBRL DOCUMENT v2.4.0.8
Warrant Liability - Additional Information (Detail) (USD $)
 1 Months Ended 12 Months Ended 1 Months Ended 6 Months Ended 12 Months Ended 1 Months Ended 1 Months Ended 1 Months Ended 12 Months Ended
Oct. 31, 2013
Oct. 31, 2013
Outstanding warrants [Member]
Nov. 30, 2008
Outstanding warrants [Member]
Dec. 31, 2013
Series A Warrants [Member]
Dec. 31, 2012
Series A Warrants [Member]
Oct. 31, 2013
Common Stock [Member]
Jun. 30, 2012
Common Stock [Member]
Dec. 31, 2012
Common Stock [Member]
Nov. 30, 2008
November 2008 Financing [Member]
Dec. 31, 2013
November 2008 Financing [Member]
Nov. 30, 2008
November 2008 Financing [Member]
Common Stock [Member]
Nov. 30, 2009
November 2009 Financing [Member]
Dec. 31, 2013
November 2009 Financing [Member]
Nov. 30, 2009
November 2009 Financing [Member]
Common Stock [Member]
Dec. 31, 2011
December 2011 Financing [Member]
Dec. 31, 2013
December 2011 Financing [Member]
Series A Warrants [Member]
Dec. 31, 2012
December 2011 Financing [Member]
Series A Warrants [Member]
Dec. 31, 2011
December 2011 Financing [Member]
Series A Warrants [Member]
Dec. 31, 2013
December 2011 Financing [Member]
Series B Warrant [Member]
Dec. 31, 2012
December 2011 Financing [Member]
Series B Warrant [Member]
Dec. 31, 2011
December 2011 Financing [Member]
Series B Warrant [Member]
Dec. 31, 2013
December 2011 Financing [Member]
Common Stock [Member]
Dec. 31, 2012
December 2011 Financing [Member]
Common Stock [Member]
Dec. 31, 2011
December 2011 Financing [Member]
Common Stock [Member]
Series A Warrants [Member]
Dec. 31, 2011
December 2011 Financing [Member]
Capital Units [Member]
Series A Warrants [Member]
Dec. 31, 2011
December 2011 Financing [Member]
Capital Units [Member]
Series B Warrant [Member]
Class of Warrant or Right [Line Items]                                                    
Number of units sold to investors                 1,379,310                                  
Price per unit                 $ 14.50     $ 12.50     $ 1.25                      
Gross proceeds from units sold to investors                 $ 20,000,000     $ 12,500,000                            
Number of securities callable by each warrant or right warrants           0.5         0.75     0.40               1     1 1
Exercise price of warrants 1.80     1.40           23.00 23.00   15.00 15.00                   1.40    
Proceeds from sale of stock       $ 538,000 $ 3,078,000       $ 18,637,000     $ 11,985,000                            
Number of shares of common stock in each unit sold to institutional investors   1 1     1                                        
Number of securities callable by warrants                     1,034,483     400,000       8,000,000     8,000,000          
Number of units sold to investors                       1,000,000     10,000,000                      
Number of warrants in each unit sold to institutional investors                           1                        
Term of warrant                                         90 days          
Warrant expiration                                 December 2016 2012-May-02                
Number of Series A warrants in each unit issued in public offering                             1                      
Number of warrants exercised                               384,534 2,198,571     2,700,000            
Number of shares issued upon warrants exercise 12,845,500                                         384,534 2,700,000      
Number of shares issued upon warrants exercise             2,700,000 2,198,571                 2,700,000         384,534 2,198,571      
Number of warrants expired                                     5,300,000