|
Derivatives (Details 2) (Sales, USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
|
Sep. 30, 2014
|
Sep. 30, 2013
|
Sep. 30, 2014
|
Sep. 30, 2013
|
|
|
Sales
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| Derivative Instruments, Gain (Loss) [Line Items] | ||||
| Gains on commodity derivatives included in sales and merchandising revenues | $ 86,558 | $ 30,894 | $ 106,389 | $ 99,896 |