Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2011

Goodwill and Intangible Assets [Abstract]

Changes in the carrying amount of goodwill by reportable segment

in thousands	Aggregates			Concrete		Asphalt Mix		Cement			Total
Gross Carrying Amount
Total as of December 31, 2009		$3,004,667			$0		$91,633		$252,664			$3,348,964
Goodwill of acquired businesses		716			0		0		0			716
Total as of December 31, 2010		$3,005,383			$0		$91,633		$252,664			$3,349,680
Goodwill of divested businesses		(10,300	)		0		0		0			(10,300	)
Total as of December 31, 2011		$2,995,083			$0		$91,633		$252,664			$3,339,380
Accumulated Impairment Losses
Total as of December 31, 2009		$0			$0		$0		($252,664	)		($252,664	)
Goodwill impairment loss		0			0		0		0			0
Total as of December 31, 2010		$0			$0		$0		($252,664	)		($252,664	)
Goodwill impairment loss		0			0		0		0			0
Total as of December 31, 2011		$0			$0		$0		($252,664	)		($252,664	)
Goodwill, net of Accumulated Impairment Losses
Total as of December 31, 2009		$3,004,667			$0		$91,633		$0			$3,096,300
Total as of December 31, 2010		$3,005,383			$0		$91,633		$0			$3,097,016
Total as of December 31, 2011		$2,995,083			$0		$91,633		$0			$3,086,716

Gross carrying amount and accumulated amortization by major intangible asset class

in thousands	2011			2010
Gross Carrying Amount
Contractual rights in place		$640,450			$628,707
Noncompetition agreements		1,430			2,200
Favorable lease agreements		16,677			16,677
Permitting, permitting compliance and zoning rights		76,956			69,631
Customer relationships		14,493			14,393
Trade names and trademarks		5,006			5,006
Other		3,200			3,200
Total gross carrying amount		$758,212			$739,814
Accumulated Amortization
Contractual rights in place		($35,748	)		($29,100	)
Noncompetition agreements		(841	)		(1,308	)
Favorable lease agreements		(2,031	)		(1,531	)
Permitting, permitting compliance and zoning rights		(12,880	)		(11,083	)
Customer relationships		(4,466	)		(2,940	)
Trade names and trademarks		(1,544	)		(1,043	)
Other		(3,200	)		(1,116	)
Total accumulated amortization		($60,710	)		($48,121	)
Total Intangible Assets Subject to Amortization, net		$697,502			$691,693
Intangible Assets with Indefinite Lives		0			0
Total Intangible Assets, net		$697,502			$691,693
Aggregate Amortization Expense for the Year		$14,032			$13,617

Estimated amortization expense

in thousands
Estimated Amortization Expense for Five Subsequent Years
2012	$11,104
2013	10,311
2014	10,505
2015	11,652
2016	12,783