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8. Segment Information (Details) (USD $)
 3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Revenues        
India $ 2,023,165 $ 4,393,737 $ 6,547,971 $ 5,132,313
North America 51,385,037 52,177,858 135,335,873 79,430,941
Other 0 0 0 0
Total revenues 53,408,202 56,571,595 141,883,844 84,563,254
Cost of goods sold        
India 1,937,563 4,172,298 6,771,935 4,976,761
North America 53,733,287 51,617,076 141,654,009 79,167,739
Other 0 0 0 0
Total cost of goods sold 55,670,850 55,789,374 148,425,944 84,144,500
Gross income/(loss)        
India 85,602 221,439 (233,964) 155,552
North America (2,348,250) 560,782 (6,318,136) 263,202
Other 0 0 0 0
Total gross loss $ (2,262,648) $ 782,221 $ (6,542,100) $ 418,754