Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements (Details)

v3.5.0.2
Fair Value Measurements (Details) - USD ($)
$ in Thousands
Sep. 30, 2016
Dec. 31, 2015
Sep. 30, 2015
Dec. 31, 2014
Assets:        
Cash and cash equivalents $ 5,906 $ 9,276 $ 12,413 $ 3,970
Total assets 5,906 9,276    
Liabilities:        
Warrants potentially settleable in cash 1,907 4,115    
Total liabilities 1,907 4,115    
Quoted Prices in Active Markets (Level 1) [Member]        
Assets:        
Cash and cash equivalents 5,906 9,276    
Total assets 5,906 9,276    
Liabilities:        
Warrants potentially settleable in cash    
Total liabilities    
Significant Other Observable Inputs (Level 2) [Member]        
Assets:        
Cash and cash equivalents    
Total assets    
Liabilities:        
Warrants potentially settleable in cash    
Total liabilities    
Unobservable Inputs (Level 3) [Member]        
Assets:        
Cash and cash equivalents    
Total assets    
Liabilities:        
Warrants potentially settleable in cash 1,907 4,115    
Total liabilities $ 1,907 $ 4,115