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Derivatives (Details 3) lb in Thousands, gal in Thousands, bu in Thousands, T in Thousands | Mar. 31, 2016 lb | Mar. 31, 2016 bu | Mar. 31, 2016 T | Mar. 31, 2016 gal | Dec. 31, 2015 lb | Dec. 31, 2015 bu | Dec. 31, 2015 T | Dec. 31, 2015 gal | Mar. 31, 2015 lb | Mar. 31, 2015 bu | Mar. 31, 2015 T | Mar. 31, 2015 gal
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Amounts of quantities outstanding included in commodity derivative contracts |  |  |  |  |  |  |  |  |  |  |  |
Nonmonetary notional amount | 10,084 | 489,698 | 85 | 150,844 | 11,532 | 424,761 | 116 | 140,340 | 65,891 | 564,198 | 126 | 224,295
Non-exchange Traded |  |  |  |  |  |  |  |  |  |  |  |
Amounts of quantities outstanding included in commodity derivative contracts |  |  |  |  |  |  |  |  |  |  |  |
Nonmonetary notional amount | 10,084 | 301,743 | 85 | 149,374 | 11,532 | 269,631 | 116 | 138,660 | 5,651 | 349,258 | 116 | 197,961
Non-exchange Traded | Corn |  |  |  |  |  |  |  |  |  |  |  |
Amounts of quantities outstanding included in commodity derivative contracts |  |  |  |  |  |  |  |  |  |  |  |
Nonmonetary notional amount | 0 | 235,426 | 0 | 0 | 0 | 227,248 | 0 | 0 | 0 | 276,158 | 0 | 0
Non-exchange Traded | Soybeans |  |  |  |  |  |  |  |  |  |  |  |
Amounts of quantities outstanding included in commodity derivative contracts |  |  |  |  |  |  |  |  |  |  |  |
Nonmonetary notional amount | 0 | 21,509 | 0 | 0 | 0 | 13,357 | 0 | 0 | 0 | 29,646 | 0 | 0
Non-exchange Traded | Wheat |  |  |  |  |  |  |  |  |  |  |  |
Amounts of quantities outstanding included in commodity derivative contracts |  |  |  |  |  |  |  |  |  |  |  |
Nonmonetary notional amount | 0 | 12,654 | 0 | 0 | 0 | 13,710 | 0 | 0 | 0 | 13,232 | 0 | 0
Non-exchange Traded | Oats |  |  |  |  |  |  |  |  |  |  |  |
Amounts of quantities outstanding included in commodity derivative contracts |  |  |  |  |  |  |  |  |  |  |  |
Nonmonetary notional amount | 0 | 32,136 | 0 | 0 | 0 | 15,019 | 0 | 0 | 0 | 29,883 | 0 | 0
Non-exchange Traded | Ethanol |  |  |  |  |  |  |  |  |  |  |  |
Amounts of quantities outstanding included in commodity derivative contracts |  |  |  |  |  |  |  |  |  |  |  |
Nonmonetary notional amount | 0 | 0 | 0 | 149,374 | 0 | 0 | 0 | 138,660 | 0 | 0 | 0 | 197,961
Non-exchange Traded | Corn Oil |  |  |  |  |  |  |  |  |  |  |  |
Amounts of quantities outstanding included in commodity derivative contracts |  |  |  |  |  |  |  |  |  |  |  |
Nonmonetary notional amount | 3,850 | 0 | 0 | 0 | 11,532 | 0 | 0 | 0 | 5,651 | 0 | 0 | 0
Non-exchange Traded | Other |  |  |  |  |  |  |  |  |  |  |  |
Amounts of quantities outstanding included in commodity derivative contracts |  |  |  |  |  |  |  |  |  |  |  |
Nonmonetary notional amount | 6,234 | 18 | 85 | 0 | 0 | 297 | 116 | 0 | 0 | 339 | 116 | 0
Exchange Traded |  |  |  |  |  |  |  |  |  |  |  |
Amounts of quantities outstanding included in commodity derivative contracts |  |  |  |  |  |  |  |  |  |  |  |
Nonmonetary notional amount | 0 | 187,955 | 0 | 1,470 | 0 | 155,130 | 0 | 1,680 | 60,240 | 214,940 | 10 | 26,334
Exchange Traded | Corn |  |  |  |  |  |  |  |  |  |  |  |
Amounts of quantities outstanding included in commodity derivative contracts |  |  |  |  |  |  |  |  |  |  |  |
Nonmonetary notional amount | 0 | 129,465 | 0 | 0 | 0 | 106,260 | 0 | 0 | 0 | 143,320 | 0 | 0
Exchange Traded | Soybeans |  |  |  |  |  |  |  |  |  |  |  |
Amounts of quantities outstanding included in commodity derivative contracts |  |  |  |  |  |  |  |  |  |  |  |
Nonmonetary notional amount | 0 | 34,315 | 0 | 0 | 0 | 17,255 | 0 | 0 | 0 | 38,555 | 0 | 0
Exchange Traded | Wheat |  |  |  |  |  |  |  |  |  |  |  |
Amounts of quantities outstanding included in commodity derivative contracts |  |  |  |  |  |  |  |  |  |  |  |
Nonmonetary notional amount | 0 | 20,950 | 0 | 0 | 0 | 28,135 | 0 | 0 | 0 | 26,675 | 0 | 0
Exchange Traded | Oats |  |  |  |  |  |  |  |  |  |  |  |
Amounts of quantities outstanding included in commodity derivative contracts |  |  |  |  |  |  |  |  |  |  |  |
Nonmonetary notional amount | 0 | 3,225 | 0 | 0 | 0 | 3,480 | 0 | 0 | 0 | 6,390 | 0 | 0
Exchange Traded | Ethanol |  |  |  |  |  |  |  |  |  |  |  |
Amounts of quantities outstanding included in commodity derivative contracts |  |  |  |  |  |  |  |  |  |  |  |
Nonmonetary notional amount | 0 | 0 | 0 | 1,470 | 0 | 0 | 0 | 840 | 0 | 0 | 0 | 26,334
Exchange Traded | Bean Oil |  |  |  |  |  |  |  |  |  |  |  |
Amounts of quantities outstanding included in commodity derivative contracts |  |  |  |  |  |  |  |  |  |  |  |
Nonmonetary notional amount |  |  |  |  |  |  |  |  | 60,240 | 0 | 0 | 0
Exchange Traded | Other |  |  |  |  |  |  |  |  |  |  |  |
Amounts of quantities outstanding included in commodity derivative contracts |  |  |  |  |  |  |  |  |  |  |  |
Nonmonetary notional amount | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 840 | 0 | 0 | 10 | 0

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