Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements - Financial Assets and Liabilities Carried At Fair Value on Recurring Basis (Details)

v3.3.1.900
Fair Value Measurements - Financial Assets and Liabilities Carried At Fair Value on Recurring Basis (Details) - USD ($)
Dec. 31, 2015
Dec. 31, 2014
Assets [Abstract]    
Marketable securities $ 500,000 $ 0
Liabilities [Abstract]    
Contingent warrant liabilities 10,464,000 31,828,000
Recurring [Member]    
Assets [Abstract]    
Foreign exchange options [1]   6,000
Marketable securities 496,000  
Total 43,086,000 67,575,000
Liabilities [Abstract]    
Contingent warrant liabilities 10,464,000 31,828,000
Recurring [Member] | Money Market Funds [Member]    
Assets [Abstract]    
Money market funds [2] 42,590,000 67,569,000
Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]    
Assets [Abstract]    
Marketable securities 496,000  
Total 43,086,000 67,569,000
Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Money Market Funds [Member]    
Assets [Abstract]    
Money market funds [2] 42,590,000 67,569,000
Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]    
Assets [Abstract]    
Foreign exchange options [1]   6,000
Total   6,000
Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member]    
Liabilities [Abstract]    
Contingent warrant liabilities $ 10,464,000 $ 31,828,000
[1] Included in other assets
[2] Included in cash and cash equivalents