Transactions with Related Parties

12 Months Ended

Dec. 31, 2013

Related Party Transactions [Abstract]

Transactions with Related Parties

13. Transactions with Related Parties

Sales, purchases and other transactions with affiliated companies, in the opinion of management, are conducted under terms no more or less favorable than then-existing market conditions. The transactions with related parties were as follows:

	Year Ended December 31,
	2013		2012		2011
Revenues:
Sales of CO2 to Sandhill Group, LLC (1)	$	3,076	$	2,905	$	2,481
Petroleum products sales to Davison family businesses(2)	1,293		1,344		1,207
Petroleum products sales to an affiliate of the Quintana Group (2)(3)	—		21,143		20,888
Expenses:
Amounts paid to our CEO in connection with the use of his aircraft	$	600	$	600	$	316
Marine operating fuel and expenses provided by an affiliate of the Quintana Group (3)	—		6,260		3,568

(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.

Our CEO, Mr. Sims, owns an aircraft which is used by us for business purposes in the course of operations. We pay Mr. Sims a fixed monthly fee and reimburse the aircraft management company for costs related to our usage of the aircraft, including fuel and the actual out-of-pocket costs. Based on current market rates for chartering of private aircraft, we believe that the terms of this arrangement are no worse than what we could have obtained in an arms-length transaction.

Amounts due from Related Parties

At December 31, 2013, and 2012, Sandhill owed us $0.2 million and $0.3 million, respectively, for purchases of CO₂.

Financing

We guarantee 50% of Sandhill’s outstanding credit facility loan. At December 31, 2013 and 2012, the total amount of Sandhill’s obligation under such credit facility was $0.8 million and $1.2 million, respectively; therefore, our guarantee was for $0.4 million and $0.6 million for the respective periods.