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13. Segment Information (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Revenues |  |  |
North America | $ 195,416 AMTX_NorthAmerica | $ 144,698 AMTX_NorthAmerica | $ 175,501 AMTX_NorthAmerica
India | 12,267 AMTX_India | 32,816 AMTX_India | 13,547 AMTX_India
Total revenues | 207,683 AMTX_TotalRevenues | 177,514 AMTX_TotalRevenues | 189,048 AMTX_TotalRevenues
Cost of goods sold |  |  |
North America | 158,719 AMTX_NorthAmerica1 | 130,498 AMTX_NorthAmerica1 | 183,784 AMTX_NorthAmerica1
India | 11,820 AMTX_India1 | 28,722 AMTX_India1 | 14,191 AMTX_India1
Total cost of goods sold | 170,539 AMTX_TotalCostOfGoodsSold | 159,220 AMTX_TotalCostOfGoodsSold | 197,975 AMTX_TotalCostOfGoodsSold
Gross profit (loss) |  |  |
North America | 36,697 AMTX_NorthAmerica2 | 14,200 AMTX_NorthAmerica2 | (8,283)AMTX_NorthAmerica2
India | 447 AMTX_India2 | 4,094 AMTX_India2 | (644)AMTX_India2
Total gross profit (loss) | $ 37,144 AMTX_TotalGrossLoss | $ 18,294 AMTX_TotalGrossLoss | $ (8,927)AMTX_TotalGrossLoss

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- Details
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- Definition India + References No definition available. + Details
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- Definition India2 + References No definition available. + Details
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- Definition North America + References No definition available. + Details
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- Definition NorthAmerica2 + References No definition available. + Details
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- Definition Total revenues + References No definition available. + Details
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Balance Type: | credit
Period Type: | duration