Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements (Details)

v2.4.0.8
Fair Value Measurements (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2014
Dec. 31, 2013
Mar. 31, 2013
Dec. 31, 2012
Jan. 06, 2007
Assets:          
Cash and Cash Equivalents $ 2,599 $ 1,034 $ 3,769 $ 4,717   
Marketable securities 7,285         
Total assets 9,884 1,034      
Liabilities:          
Warrants potentially settleable in cash 12,089 23      
Total liabilities 12,089 23      
Quoted Prices in Active Markets (Level 1) [Member]
          
Assets:          
Cash and Cash Equivalents 2,599 1,034      
Marketable securities 4,014         
Total assets 6,613 1,034      
Liabilities:          
Warrants potentially settleable in cash            
Total liabilities            
Significant Other Observable Inputs (Level 2) [Member]
          
Assets:          
Cash and Cash Equivalents            
Marketable securities 3,271         
Total assets 3,271         
Liabilities:          
Warrants potentially settleable in cash            
Total liabilities            
Unobservable Inputs (Level 3) [Member]
          
Assets:          
Cash and Cash Equivalents            
Marketable securities           
Total assets            
Liabilities:          
Warrants potentially settleable in cash 12,089 23      
Total liabilities $ 12,089 $ 23