Annual report pursuant to Section 13 and 15(d)

Basis of Presentation and Significant Accounting Policies (Details)

v2.4.0.8
Basis of Presentation and Significant Accounting Policies (Details) (USD $)
In Millions, except Share data in Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Long-Lived Assets to be Abandoned [Line Items]      
Accelerated depreciation $ 2.2    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Anti-dilutive securities excluded from computation of diluted net income (loss) per share (in shares) 22,926 19,443 5,566
Options for Common Stock [Member]
      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Anti-dilutive securities excluded from computation of diluted net income (loss) per share (in shares) 7,087 5,603 3,890
Convertible Preferred Stock [Member]
      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Anti-dilutive securities excluded from computation of diluted net income (loss) per share (in shares) 0 0 67
Warrants for Common Stock [Member]
      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Anti-dilutive securities excluded from computation of diluted net income (loss) per share (in shares) 15,839 13,840 1,609
Equipment [Member] | Minimum [Member]
      
Property, Plant and Equipment [Line Items]      
Useful lives 3 years    
Equipment [Member] | Maximum [Member]
      
Property, Plant and Equipment [Line Items]      
Useful lives 7 years    
Leasehold Improvements, Buildings and Building Improvements [Member] | Minimum [Member]
      
Property, Plant and Equipment [Line Items]      
Useful lives 1 year    
Leasehold Improvements, Buildings and Building Improvements [Member] | Maximum [Member]
      
Property, Plant and Equipment [Line Items]      
Useful lives 15 years    
Property, Equipment, Building and Leasehold Improvements [Member]
      
Long-Lived Assets to be Abandoned [Line Items]      
Accelerated depreciation   1.3  
Impairment loss   $ 0.8