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9. Other accrued expenses and other liabilities (Details) (USD $)
Jun. 30, 2013
Dec. 31, 2012
Accounts Payable and Accrued Liabilities    
Payroll related $ 489,493 $ 329,191
Estimated damage liability that may not be covered by insurance 393,592 300,000
Estimate settlement with vendor in Europe 400,000 300,000
Professional fees 120,000 160,773
Accrued board fees 612,449 349,948
Consultant fees 258,777 133,777
Other 24,492 109,819
Total Accounts Payable and Accrued Liabilities $ 2,298,803 $ 1,683,508