Quarterly report pursuant to Section 13 or 15(d)

Capitalization and Equity Structure (Details)

v3.7.0.1
Capitalization and Equity Structure (Details) - $ / shares
shares in Thousands
 3 Months Ended
Mar. 31, 2017
Dec. 31, 2016
Schedule of Capitalization, Equity [Line Items]    
Merger/PPO Warrant Shares Outstanding 3,226 3,597
Merger/PPO Warrant Shares Issued 0  
Merger/PPO Warrant Shares Exercised 0  
Merger/PPO Warrant Shares Expired (371)  
2015 Series A Preferred Warrants [Member]    
Schedule of Capitalization, Equity [Line Items]    
Exercise price $ 3.74  
Warrant term 5 years  
Merger/PPO Warrant Shares Outstanding 1,634 1,634
Placement agent warrants [Member]    
Schedule of Capitalization, Equity [Line Items]    
Exercise price $ 7.00  
Warrant term 5 years  
Merger/PPO Warrant Shares Outstanding 426 426
Bridge warrants [Member]    
Schedule of Capitalization, Equity [Line Items]    
Exercise price $ 7.00  
Warrant term 3 years  
Merger/PPO Warrant Shares Outstanding 0 371
Merger/PPO Warrant Shares Expired (371)  
PPO warrants [Member]    
Schedule of Capitalization, Equity [Line Items]    
Exercise price $ 14.00  
Warrant term 5 years  
Merger/PPO Warrant Shares Outstanding 1,078 1,078
Pre 2014 Warrants [Member]    
Schedule of Capitalization, Equity [Line Items]    
Exercise price $ 9.66  
Merger/PPO Warrant Shares Outstanding 88 88
Pre 2014 Warrants [Member] | Minimum [Member]    
Schedule of Capitalization, Equity [Line Items]    
Warrant term 9 years  
Pre 2014 Warrants [Member] | Maximum [Member]    
Schedule of Capitalization, Equity [Line Items]    
Warrant term 10 years