Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2012

Goodwill and Intangible Assets

Schedule of gross amount of goodwill acquired and the cumulative impairment loss recognized

The table below shows the gross amount of goodwill acquired and the cumulative impairment loss recognized as of December 31, 2012 (in thousands).

	Southwest			Northeast		Liberty		Total
Gross goodwill as of December 31, 2011	$	34,178		$	62,445	$	—	$	96,623
Acquisition(1)		—			—		74,256		74,256
Gross goodwill as of December 31, 2012		34,178			62,445		74,256		170,879
Cumulative impairment(2)		(28,705	)		—		—		(28,705	)
Balance as of December 31, 2012	$	5,473		$	62,445	$	74,256	$	142,174

(1)

Represents goodwill associated with the Keystone Acquisition (see Note 3).

(2)

All impairments recorded in the fourth quarter of 2008.

Schedule of intangible assets

The Partnership's intangible assets as of December 31, 2012 and 2011 are comprised of customer contracts and relationships, as follows (in thousands):

	December 31, 2012							December 31, 2011
Description	Gross		Accumulated Amortization			Net		Gross		Accumulated Amortization			Net		Useful Life
Southwest	$	669,390	$	(173,317	)	$	496,073	$	669,462	$	(139,131	)	$	530,331	10 - 25 yrs
Northeast		102,473		(38,719	)		63,754		102,473		(29,037	)		73,436	12 yrs
Liberty		304,708		(9,380	)		295,328		—		—			—	19 yrs
Total	$	1,076,571	$	(221,416	)	$	855,155	$	771,935	$	(168,168	)	$	603,767

Schedule of estimated future amortization expense related to the intangible assets

Estimated future amortization expense related to the intangible assets at December 31, 2012 is as follows (in thousands):

Year ending December 31,
2013	$	60,234
2014		60,234
2015		60,234
2016		60,234
2017		60,234
Thereafter		553,985
	$	855,155