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Accounting Policies Asset Retirement Obligations (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]      
Beginning balance $ 3,177 [1] $ 2,990  
Liabilities settled (400) 0  
Accretion expense 216 [2] 187 [2] 173 [2]
Ending balance $ 2,993 $ 3,177 [1] $ 2,990
[1] Includes the historical balances of the Tyler Terminal and Tank Assets. See Notes 1 and 3 for further discussion.
[2] Adjusted to include the historical cash flows of the Tyler Terminal and Tank Assets. See Notes 1 and 3 for further discussion.