Components of Working Capital (tables)

9 Months Ended

Sep. 30, 2013

Components Of Working Capital [Abstract]

Other Current Assets Table

A summary of other current assets is as follows:

thousands	September 30, 2013		December 31, 2012
Natural gas liquids inventory	$	2,438	$	1,678
Natural gas imbalance receivables	2,729		1,663
Prepaid insurance	2,083		1,897
Other	1,662		1,760
Total other current assets	$	8,912	$	6,998

Accrued Liabilities Table

A summary of accrued liabilities is as follows:

thousands	September 30, 2013		December 31, 2012
Accrued capital expenditures	$	100,876	$	112,311
Accrued plant purchases	20,738		16,350
Accrued interest expense	16,620		15,868
Short-term asset retirement obligations	1,187		1,711
Short-term remediation and reclamation obligations	609		799
Other	293		1,561
Total accrued liabilities	$	140,323	$	148,600