Quarterly report pursuant to Section 13 or 15(d)

Equity (Narrative) (Details)

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Equity (Narrative) (Details) (USD $)
 0 Months Ended 1 Months Ended 9 Months Ended 1 Months Ended 1 Months Ended
Sep. 24, 2016
Sep. 30, 2013
Apr. 30, 2013
Feb. 28, 2013
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Three Year Series JJ Warrants [Member]
Sep. 30, 2013
Series B Preferred Stock [Member]
Jul. 31, 2013
Series B Preferred Stock [Member]
Dec. 31, 2012
Series B Preferred Stock [Member]
Sep. 30, 2013
Common Stock [Member]
Jul. 31, 2013
Common Stock [Member]
Class of Warrant or Right [Line Items]                        
Issued stock upon exercise of stock options, net   10,563,381 2,100,000 1,542,389                
Shares issued, price per share   $ 2.84 $ 2.43 $ 3.10                
Net proceeds after deducting associated expenses   $ 28,800,000 $ 4,800,000 $ 4,500,000                
Proceeds from issuance of common stock   30,000,000     41,303,738 758,695            
Class of Warrant or Right, Number of Securities Called by Warrants or Rights             3,169,015          
Class of Warrant or Right, Outstanding   4,542,764     4,542,764              
Class of Warrant or Right, Exercise Price of Warrants or Rights             3.83          
Investment Warrants Expiration Date Sep. 24, 2016                      
Payments of Stock Issuance Costs   $ 999,000                    
placement agent fees as a percentage of gross proceeds   3.30%                    
Conversion of Stock, Shares Converted               710.9 580      
Conversion of Stock, Shares Issued                     2,324,643 1,896,600
Preferred Stock, Shares Outstanding               8,012   6,938    
Common Stock, Number of Shares Issuable Upon Conversion                     26,199,240