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8. Segment Information (Details) (USD $)
 3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Statement of Operations Data        
India $ 2,211,109 $ 107 $ 4,524,806 $ 738,576
North America 42,068,757 27,253,083 83,950,836 27,253,083
Other            
Total revenues 44,279,866 27,253,190 88,475,642 27,991,659
India 2,426,783 17,160 4,834,372 804,463
North America 43,874,023 27,550,494 87,920,722 27,550,663
Other            
Total cost of goods sold 46,300,806 27,567,654 92,755,094 28,355,126
India (215,674) (17,053) (309,566) (65,887)
North America (1,805,266) (297,411) (3,969,886) (297,580)
Other            
Total gross loss $ (2,020,940) $ (314,464) $ (4,279,452) $ (363,467)