|
Derivatives (Details Textual) (USD $)
In Millions, unless otherwise specified |
6 Months Ended | ||
|---|---|---|---|
|
Jun. 30, 2012
|
Dec. 31, 2011
|
Jun. 30, 2011
|
|
| Derivatives (Textual) [Abstract] | |||
| Maximum period in which contracts for the sale of grain to processors or other consumers extend (years) | 1 year | ||
| Estimated fair value of inventory | $ 6.1 | $ 1.0 | $ 78.2 |