v2.4.0.8
Warrant Liabilities (Schedule of Warrant Liabilities at Fair Value) (Details) (Warrant [Member], USD $)
6 Months Ended
Jun. 30, 2014
Fair Value Measurements Using Significant Unobservable Inputs (Level 3)  
Beginning balance   
Acquisition Measurement Date 1,668,795
Initial Measurement 2,407,930
Increase (Decrease) in Fair Value (1,702,841)
Ending balance 2,373,884
Number of Warrants  
Beginning balance   
Acquisition 47,726,094
Additions 30,136,713
Reductions   
Ending balance 77,862,807
2011 Unit Offering [Member]
 
Fair Value Measurements Using Significant Unobservable Inputs (Level 3)  
Beginning balance   
Acquisition Measurement Date 1,242,333
Initial Measurement   
Increase (Decrease) in Fair Value (899,807)
Ending balance 342,526
Number of Warrants  
Beginning balance   
Acquisition 33,277,837
Additions   
Reductions   
Ending balance 33,277,837
2011 Unit Offering Placement Agent [Member]
 
Fair Value Measurements Using Significant Unobservable Inputs (Level 3)  
Beginning balance   
Acquisition Measurement Date 156,367
Initial Measurement   
Increase (Decrease) in Fair Value (113,254)
Ending balance 43,113
Number of Warrants  
Beginning balance   
Acquisition 4,726,891
Additions   
Reductions   
Ending balance 4,726,891
2012 Bridge Warrant [Member]
 
Fair Value Measurements Using Significant Unobservable Inputs (Level 3)  
Beginning balance   
Acquisition Measurement Date 20,690
Initial Measurement   
Increase (Decrease) in Fair Value (2,988)
Ending balance 17,702
Number of Warrants  
Beginning balance   
Acquisition 1,137,735
Additions   
Reductions   
Ending balance 1,137,735
2012 Bridge Warrant Placement Agent [Member]
 
Fair Value Measurements Using Significant Unobservable Inputs (Level 3)  
Beginning balance   
Acquisition Measurement Date 4,138
Initial Measurement   
Increase (Decrease) in Fair Value (598)
Ending balance 3,540
Number of Warrants  
Beginning balance   
Acquisition 227,546
Additions   
Reductions   
Ending balance 227,546
2012 Unit Offering [Member]
 
Fair Value Measurements Using Significant Unobservable Inputs (Level 3)  
Beginning balance   
Acquisition Measurement Date 137,178
Initial Measurement   
Increase (Decrease) in Fair Value (45,283)
Ending balance 91,895
Number of Warrants  
Beginning balance   
Acquisition 6,300,213
Additions   
Reductions   
Ending balance 6,300,213
2012 Unit Offering Placement Agent [Member]
 
Fair Value Measurements Using Significant Unobservable Inputs (Level 3)  
Beginning balance   
Acquisition Measurement Date 96,481
Initial Measurement   
Increase (Decrease) in Fair Value (34,436)
Ending balance 62,045
Number of Warrants  
Beginning balance   
Acquisition 1,561,544
Additions   
Reductions   
Ending balance 1,561,544
2013 Merger related notes converted [Member]
 
Fair Value Measurements Using Significant Unobservable Inputs (Level 3)  
Beginning balance   
Acquisition Measurement Date 11,608
Initial Measurement   
Increase (Decrease) in Fair Value (3,738)
Ending balance 7,870
Number of Warrants  
Beginning balance   
Acquisition 494,328
Additions   
Reductions   
Ending balance 494,328
2014 Senior Note Purchase [Member]
 
Fair Value Measurements Using Significant Unobservable Inputs (Level 3)  
Beginning balance   
Acquisition Measurement Date   
Initial Measurement 2,407,930
Increase (Decrease) in Fair Value (602,737)
Ending balance $ 1,805,193
Number of Warrants  
Beginning balance   
Acquisition   
Additions 30,136,713
Reductions   
Ending balance 30,136,713