Lease Obligations	12 Months Ended
Dec. 31, 2012
Lease Obligations	14. LEASE OBLIGATIONS We have entered into several operating lease arrangements for office space, equipment and pipeline facilities. Rent expense related to these leases for 2012, 2011 and 2010 was $1.4 million, $1.1 million and $1.1 million, respectively. Future minimum payments under our current lease agreements for the years 2013 through 2017 are $1.2 million, $1.2 million, $794,000, $793,000 and $420,000, respectively; and approximately $3.1 million thereafter, with an aggregate total of approximately $7.5 million.

Lease Obligations

12 Months Ended

Dec. 31, 2012

14. LEASE OBLIGATIONS

We have entered into several operating lease arrangements for office space, equipment and pipeline facilities. Rent expense related to these leases for 2012, 2011 and 2010 was $1.4 million, $1.1 million and $1.1 million, respectively. Future minimum payments under our current lease agreements for the years 2013 through 2017 are $1.2 million, $1.2 million, $794,000, $793,000 and $420,000, respectively; and approximately $3.1 million thereafter, with an aggregate total of approximately $7.5 million.

- Definition

The entire disclosure for lessee entity's leasing arrangements including, but not limited to, all of the following: (a.) The basis on which contingent rental payments are determined, (b.) The existence and terms of renewal or purchase options and escalation clauses, (c.) Restrictions imposed by lease agreements, such as those concerning dividends, additional debt, and further leasing.

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