Annual report pursuant to Section 13 and 15(d)

Capitalization and Equity Structure (Details Textual)

v3.3.1.900
Capitalization and Equity Structure (Details Textual) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 1 Months Ended 12 Months Ended
Jan. 14, 2014
Dec. 23, 2015
Nov. 30, 2014
Oct. 31, 2014
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Class of Stock [Line Items]              
Common Stock, Shares Authorized         500,000 500,000  
Preferred Stock, Shares Authorized         10,000 10,000  
Common Stock, Shares, Issued         105,191 101,622  
Common Stock, Shares, Outstanding         105,191 101,622  
Preferred Stock, Shares Issued         13 0  
Preferred Stock, Shares Outstanding         13 0  
Class of Warrant or Right, Number of Securities Called by Warrants or Rights         14,851    
Preferred Shares and Warrants Purchase Price   $ 1,000          
Gross Proceeds from Preferred Stock and Warrants   15,000          
Proceeds from Issuance of Preferred Stock, Preference Stock, and Warrants, Total   13,906     $ 13,906 $ 0 $ 4,152
Stock Related Expenses Payable   $ 173          
Description of Warrants And Preferred Shares   The Preferred Shares and Warrants were sold in units, with each unit consisting of one Preferred Share and a Warrant to purchase up to 0.9901 shares of Common Stock.          
Stock Conversion Price Per Share         $ 1.01    
Minimum Percentage of Vote Holders of Preferred Stock   75.00%          
Preferred Stock Converted Into Common stock   3,300          
Sale of Stock, Price Per Share   $ 1.01          
Payments of Stock Issuance Costs         $ 782    
Maximum Financing in Anti Dilution Provision         10,000    
Fair Value Adjustment of Warrants         2,505    
Proceeds from Warrant Exercises         $ 52 21,412 $ 0
Stock Issued During Period, Shares, Conversion Of Convertible Preferred Stock         2    
Warrants Not Settleable in Cash, Fair Value Disclosure         $ 11,700    
Offer to Amend and Exercise [Member]              
Class of Stock [Line Items]              
Fair Value Adjustment of Warrants           $ 16,485  
Proceeds from Warrant Exercises       $ 22,756      
Warrant Solicitation Costs       $ 1,467      
Transfer of warrant liability to equity     $ 27,099        
Warrant [Member]              
Class of Stock [Line Items]              
Class of Warrant or Right, Number of Securities Called by Warrants or Rights   14,851   30,300 36,055    
Class of Warrant or Right, Exercise Price of Warrants or Rights   $ 1.25   $ 2.00 $ 2.00    
Warrants Term   5 years          
Warrant [Member] | Offer to Amend and Exercise [Member]              
Class of Stock [Line Items]              
Class of Warrant or Right, Exercise Price of Warrants or Rights       $ 1.00 $ 1.00    
Warrant [Member] | Merger and PPO [Member]              
Class of Stock [Line Items]              
Class of Warrant or Right, Number of Securities Called by Warrants or Rights         30,300    
Common Stock [Member]              
Class of Stock [Line Items]              
Stock Issued During Period, Shares, New Issues         0   0
Class of Warrant or Right, Number of Securities Called by Warrants or Rights         618    
Class of Warrant or Right, Exercise Price of Warrants or Rights         $ 1.38    
Sale of Stock, Price Per Share         $ 0.25    
Stock Issued During Period, Shares, Conversion Of Convertible Preferred Stock 26,691            
Series A Preferred Stock [Member]              
Class of Stock [Line Items]              
Stock Issued During Period, Shares, New Issues   15          
Class of Warrant or Right, Number of Securities Called by Warrants or Rights   14,851          
Convertible Preferred Stock [Member]              
Class of Stock [Line Items]              
Preferred Stock, Shares Issued         15    
Amortization of Financing Costs and Discounts, Total         $ 1,355