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10. Other accrued expenses and other liabilities (Tables)
9 Months Ended
Sep. 30, 2013
Other Accrued Expenses And Other Liabilities Tables  
Other accrued expenses and other liabilities
    September 30,     December 31,  
    2013     2012  
Payroll related   $ 505,893     $ 329,191  
Estimated damage liability that may not be covered by insurance     393,592       300,000  
Estimated settlement with vendor in Europe     400,000       300,000  
Professional fees     120,000       160,773  
Accrued board fees     584,761       349,948  
Consultant fees     321,277       133,777  
Other     24,488       109,819  
    $ 2,350,011     $ 1,683,508