Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2011

Goodwill and Intangible Assets

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

	Southwest			Northeast		Gulf Coast			Total
Gross goodwill as of December 31, 2010	$	24,324		$	3,948	$	9,854		$	38,126
Acquisition(1)		—			58,497		—			58,497
Gross Goodwill as of December 31, 2011		24,324			62,445		9,854			96,623
Cumulative impairment(2)		(18,851	)		—		(9,854	)		(28,705	)
Balance as of December 31, 2011	$	5,473		$	62,445	$	—		$	67,918

(1)

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

(2)

All impairments recorded in the fourth quarter of 2008.

Schedule of intangible assets

	December 31, 2011							December 31, 2010
Description	Gross		Accumulated Amortization			Net		Gross		Accumulated Amortization			Net		Useful Life
Southwest	$	406,690	$	(92,340	)	$	314,350	$	406,801	$	(69,655	)	$	337,146	10 - 20 yrs
Northeast		102,473		(29,037	)		73,436		68,573		(19,590	)		48,983	12 yrs
Gulf Coast		262,772		(46,791	)		215,981		262,772		(35,323	)		227,449	20 - 25 yrs
Total	$	771,935	$	(168,168	)	$	603,767	$	738,146	$	(124,568	)	$	613,578

Schedule of estimated future amortization expense related to the intangible assets

Year ending December 31,
2012	$	43,940
2013		43,940
2014		43,940
2015		43,940
2016		43,940
Thereafter		384,067
	$	603,767