XML 15 R46.htm IDEA: XBRL DOCUMENT v2.4.0.6
Fair Value Measurements (Details) (USD $)
3 Months Ended
Mar. 31, 2013
Dec. 31, 2012
Mar. 31, 2013
Fair Value, Measurements, Recurring [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Mar. 31, 2013
Fair Value, Measurements, Recurring [Member]
Put Option [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Put Option [Member]
Mar. 31, 2013
Fair Value, Measurements, Recurring [Member]
Warrants [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Warrants [Member]
Mar. 31, 2013
Fair Value, Measurements, Recurring [Member]
Level 1 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Level 1 [Member]
Mar. 31, 2013
Fair Value, Measurements, Recurring [Member]
Level 1 [Member]
Put Option [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Level 1 [Member]
Put Option [Member]
Mar. 31, 2013
Fair Value, Measurements, Recurring [Member]
Level 1 [Member]
Warrants [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Level 1 [Member]
Warrants [Member]
Mar. 31, 2013
Fair Value, Measurements, Recurring [Member]
Level 2 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Level 2 [Member]
Mar. 31, 2013
Fair Value, Measurements, Recurring [Member]
Level 2 [Member]
Put Option [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Level 2 [Member]
Put Option [Member]
Mar. 31, 2013
Fair Value, Measurements, Recurring [Member]
Level 2 [Member]
Warrants [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Level 2 [Member]
Warrants [Member]
Mar. 31, 2013
Fair Value, Measurements, Recurring [Member]
Level 3 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Level 3 [Member]
Mar. 31, 2013
Fair Value, Measurements, Recurring [Member]
Level 3 [Member]
Put Option [Member]
Mar. 31, 2012
Fair Value, Measurements, Recurring [Member]
Level 3 [Member]
Put Option [Member]
Mar. 31, 2013
Fair Value, Measurements, Recurring [Member]
Level 3 [Member]
Warrants [Member]
Mar. 31, 2012
Fair Value, Measurements, Recurring [Member]
Level 3 [Member]
Warrants [Member]
Assets [Abstract]                                                    
Cash equivalents     $ 8,645,000 $ 6,145,000         $ 8,645,000 $ 6,145,000         $ 0 $ 0         $ 0 $ 0        
Liabilities [Abstract]                                                    
Put option liability (2,500,000) (2,250,000)     (2,500,000) (2,250,000)         0 0         0 0         (2,500,000) (1,640,000)    
Warrant liability             (84,000) (418,000)         0 0         0 0         (84,000) (757,000)
Change in Level 3 put option liability [Roll Forward]                                                    
Beginning balance (2,500,000) (2,250,000)     (2,500,000) (2,250,000)         0 0         0 0         (2,250,000) (1,910,000)    
Increase (Decrease) in fair value recognized in operating expenses                                             (250,000) 270,000 334,000 (130,000)
Ending balance (2,500,000) (2,250,000)     (2,500,000) (2,250,000)         0 0         0 0         (2,500,000) (1,640,000)    
Change in Level 3 warrant liability [Roll Forward]                                                    
Beginning balance             (84,000) (418,000)         0 0         0 0         (418,000) (627,000)
Increase in fair value recognized in operating expenses                                             (250,000) 270,000 334,000 (130,000)
Ending balance             $ (84,000) $ (418,000)         $ 0 $ 0         $ 0 $ 0         $ (84,000) $ (757,000)