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Fair Value Measurements (Details) (USD $)
3 Months Ended 9 Months Ended
Sep. 30, 2014
Fair Value, Measurements, Recurring [Member]
Dec. 31, 2013
Fair Value, Measurements, Recurring [Member]
Sep. 30, 2014
Fair Value, Measurements, Recurring [Member]
Level 1 [Member]
Dec. 31, 2013
Fair Value, Measurements, Recurring [Member]
Level 1 [Member]
Sep. 30, 2014
Fair Value, Measurements, Recurring [Member]
Level 2 [Member]
Dec. 31, 2013
Fair Value, Measurements, Recurring [Member]
Level 2 [Member]
Sep. 30, 2014
Fair Value, Measurements, Recurring [Member]
Level 3 [Member]
Dec. 31, 2013
Fair Value, Measurements, Recurring [Member]
Level 3 [Member]
Sep. 30, 2014
Fair Value, Measurements, Nonrecurring [Member]
Sep. 30, 2014
Fair Value, Measurements, Nonrecurring [Member]
Assets [Abstract]                    
Cash equivalents $ 3,644,000 $ 4,644,000 $ 3,644,000 $ 4,644,000 $ 0 $ 0 $ 0 $ 0    
Liabilities:                    
Warrant liability 287,000   0   0   287,000      
Fair Value, Instruments Classified in Shareholders' Equity Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]                    
Beginning balance                 0 0
Fair value of warrants allocated from additional paid in capital                 421,000 421,000
Decrease in fair value recognized in operating expenses                 (134,000) (134,000)
Ending balance                 $ 287,000 $ 287,000