Immaterial Correction of Prior Period Financial Statements (Tables)

6 Months Ended

Jun. 30, 2013

Accounting Changes and Error Corrections [Abstract]

Schedule of Error Corrections and Prior Period Adjustments [Table Text Block]

The following table reflects the revenues, purchased gas costs and total operating costs and expenses as previously reported and as adjusted for the three and six months ended June 30, 2012 (in thousands):



	Three Months Ended June 30, 2012		Six Months Ended June 30, 2012
As previously reported:
Total revenues	$	351,194	$	722,903
Purchased gas, NGLs and crude oil	$	260,890	$	532,846
Total operating costs and expenses	$	332,813	$	682,449
Operating income	$	18,381	$	40,454

As adjusted:
Total revenues	$	394,402	$	820,361
Purchased gas, NGLs and crude oil	$	304,098	$	630,304
Total operating costs and expenses	$	376,021	$	779,907
Operating income	$	18,381	$	40,454

- Definition

Tabular disclosure of prior period adjustments to previously issued financial statements including (1) the effect of the correction on each financial statement line item and any per-share amounts affected for each prior period presented (2) the cumulative effect of the change on retained earnings or other appropriate components of equity or net assets in the statement of financial position, as of the beginning of the earliest period presented, and (3) the effect of the prior period adjustments (both gross and net of applicable income tax) on the net income of each prior period presented in the entity's annual report for the year in which the adjustments are made.

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