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Transactions with Related Parties (Tables)
 12 Months Ended
Dec. 31, 2014
Related Party Transactions [Abstract]  
Schedule Of Transactions With Related Parties
 
Year Ended December 31,
 
2014
 
2013
 
2012
Revenues:
 
 
 
 
 
Sales of CO2 to Sandhill Group, LLC (1)
$
3,060

 
$
3,076

 
$
2,905

Petroleum products sales to Davison family businesses(2)
—

 
1,293

 
1,344

Petroleum products sales to an affiliate of the Quintana Group (2) (3)
—

 
—

 
21,143

Expenses:
 
 
 
 
 
Amounts paid to our CEO in connection with the use of his aircraft
$
630

 
$
600

 
$
600

Marine operating fuel and expenses provided by an affiliate of the Quintana Group (3)
—

 
—

 
6,260


(1)
We own a 50% interest in Sandhill Group, LLC (or "Sandhill).
(2)
Amounts included in discontinued operations for all periods presented.
(3)
The Quintana Group monetized all of its remaining investment in our common units on October 5, 2012. Transactions with the Quintana Group are included in the above table as related party transactions through October 5, 2012.