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6. Long - Term Debt (Details) (USD $)
Sep. 30, 2012
Dec. 31, 2011
Sep. 30, 2012
ThermFisherFinancialServices [Member]
Dec. 31, 2011
ThermFisherFinancialServices [Member]
Sep. 30, 2012
De Lage Landen Financial Services [Member]
Dec. 31, 2011
De Lage Landen Financial Services [Member]
Sep. 30, 2012
Catepillar Finance [Member]
Dec. 31, 2011
Catepillar Finance [Member]
Sep. 30, 2012
CNH Capital America LLC [Member]
Dec. 31, 2011
CNH Capital America LLC [Member]
Sep. 30, 2012
GE Capital [Member]
Dec. 31, 2011
GE Capital [Member]
Sep. 30, 2012
Robert And Phyllis Rice [Member]
Dec. 31, 2011
Robert And Phyllis Rice [Member]
Sep. 23, 2012
De Lage Landen Financial Services 1 [Member]
Dec. 31, 2011
De Lage Landen Financial Services 1 [Member]
Sep. 30, 2012
CatepillarFinance1 [Member]
Dec. 31, 2011
CatepillarFinance1 [Member]
Sep. 30, 2012
De Lage Landen Financial Services 2 [Member]
Dec. 31, 2011
De Lage Landen Financial Services 2 [Member]
Sep. 30, 2012
CatepillarFinance2 [Member]
Dec. 31, 2011
CatepillarFinance2 [Member]
Sep. 30, 2012
Corral Blancoland [Member]
Dec. 31, 2011
Corral Blancoland [Member]
Total debt $ 442,904 $ 237,849 $ 41,000    $ 21,004    $ 59,851 $ 77,040 $ 4,454 $ 8,648 $ 3,552 $ 6,531 $ 63,206 $ 80,882 $ 14,183 $ 19,229 $ 16,590 $ 21,990 $ 18,360 $ 23,529 $ 27,210    $ 173,494   
Less current portion 305,911 79,631                                            
Noncurrent portion $ 136,993 $ 158,218