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6. Notes Payable (Details) (USD $)
Dec. 31, 2012
Dec. 31, 2011
Notes Payable Details    
Third Eye Capital senior secured term note    $ 18,126,611
Third Eye Capital existing term note 6,679,466 0
Third Eye Capital revolving credit facility 23,378,535 0
Third Eye Capital revenue participation converted to term note 7,406,224 0
Third Eye Capital acquisition term note 14,768,846 0
Cilion shareholder Seller note payable 4,011,430 0
State Bank of India secured term loan 5,756,752 5,161,191
Revolving line of credit - related party 1,540,074 4,291,913
Subordinated notes 3,338,114 0
EB-5 long term promissory notes 1,006,863 0
Unsecured working capital loans and short-term notes 2,159,291 2,066,720
Total debt 70,045,595 29,646,435
Less current portion 34,523,591 9,653,499
Total long term debt $ 35,522,004 $ 19,992,936