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14. Segment Information (Details) (USD $)
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Revenues    
India $ 13,547,620 $ 9,911,616
North America 175,500,606 131,946,298
Other 0 0
Total revenues 189,048,226 141,857,914
Cost of goods sold    
India 14,191,098 9,494,395
North America 183,784,075 127,721,645
Other 0 0
Total cost of goods sold 197,975,173 137,216,040
Gross income/(loss)    
India (643,478) 417,221
North America (8,283,469) 4,224,653
Other 0 0
Total gross income loss $ (8,926,947) $ 4,641,874