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6. Long-Term Debt (Details) (USD $)
Mar. 31, 2013
Dec. 31, 2012
Total debt $ 1,459,242 $ 1,505,494
Less current portion (469,154) (461,354)
Noncurrent portion 990,088 1,044,140
ThermFisherFinancialServices [Member]
   
Total debt 24,134 34,310
ThermFisherFinancialServices1 [Member]
   
Total debt 30,708 30,708
StearnsBank [Member]
   
Total debt 70,150 79,500
WesternStatesEquipmentCo [Member]
   
Total debt 49,360 56,390
CNH Capital America LLC [Member]
   
Total debt 2,045 3,478
Catepillar Finance [Member]
   
Total debt 22,999 25,823
GE Capital [Member]
   
Total debt 1,429 2,847
De Lage Landen Financial Services [Member]
   
Total debt 18,236 19,629
PhyllisRice [Member]
   
Total debt 49,364 55,365
De Lage Landen Financial Services 1 [Member]
   
Total debt 14,609 16,496
CatepillarFinance1 [Member]
   
Total debt 12,431 14,535
De Lage Landen Financial Services 2 [Member]
   
Total debt 9,599 12,235
Corral Blancoland [Member]
   
Total debt 86,747 86,747
SoyatalMine [Member]
   
Total debt $ 1,067,431 $ 1,067,431