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Subsequent Events (Details) (USD $)
In Millions, except Share data, unless otherwise specified
 1 Months Ended 0 Months Ended
May 31, 2012
Jun. 30, 2009
Nov. 05, 2013
Subsequent Event [Member]
Oct. 28, 2013
Subsequent Event [Member]
Oct. 04, 2013
Subsequent Event [Member]
Employee
Subsequent Event [Line Items]          
Common stock issued (in shares) 15,300,000 900,000 2,100,000    
Proceeds from issuance of common stock $ 21.1 $ 2.7 $ 0.6 $ 6.8  
Remaining amount     46.9    
Number of positions eliminated         21
Eliminated positions as a percentage of global workforce         33.00%
Additional expenses incurred related to the reorganization         1.4
Common stock and warrants sold (in shares)       20,960,000  
Shares of common stock that can be purchased (in shares)       9,432,000  
Price per share (in dollars per share)       $ 0.36  
Gross proceeds $ 21.5 $ 3.0   $ 7.5  
Investment Warrants, Exercise Price       $ 0.44