Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2012

Changes in Goodwill

The following table shows the changes in goodwill, all of which relate to the Aggregates business, by reportable segment and in total:

years ended December 31	Mideast Group			Southeast Group			West Group			Total
(add 000)	2012
Balance at beginning of period	$	122,052		$	72,073		$	422,546		$	616,671
Adjustments to purchase price allocations		---			---			(467	)		(467)
District reorganization		(9,229	)		9,229			---			---
Balance at end of period	$	112,823		$	81,302		$	422,079		$	616,204
	2011
Balance at beginning of period	$	122,052		$	105,870		$	398,605		$	626,527
Acquisitions		---			---			23,941			23,941
Amounts allocated to divestitures		---			(33,797	)		---			(33,797)
Balance at end of period	$	122,052		$	72,073		$	422,546		$	616,671

Intangible Assets Subject to Amortization

Intangible assets subject to amortization consist of the following:

December 31	Gross Amount		Accumulated Amortization			Net Balance
(add 000)	2012
Noncompetition agreements	$	6,560	$	(5,476	)	$	1,084
Customer relationships		20,160		(4,100	)		16,060
Use rights and other		15,865		(6,416	)		9,449
Total	$	42,585	$	(15,992	)	$	26,593
	2011
Noncompetition agreements	$	6,984	$	(5,447	)	$	1,537
Customer relationships		20,160		(2,070	)		18,090
Use rights and other		15,865		(5,307	)		10,558
Total	$	43,009	$	(12,824	)	$	30,185

Intangible Assets Deemed to Indefinite Life and Not Being Amortized

Intangible assets deemed to have an indefinite life and not being amortized consist of the following:

December 31	Aggregates Business		Specialty Products		Total
(add 000)	2012
Use rights	$	21,275	$	--	$	21,275
Trade name		--		2,565		2,565
Total	$	21,275	$	2,565	$	23,840
	2011
Use rights	$	21,383	$	--	$	21,383
Trade name		--		2,565		2,565
Total	$	21,383	$	2,565	$	23,948

Other Intangibles for Aggregates Business

other intangibles for its Aggregates business, consisting of the following:

	Amount		Weighted-average amortization period
(add 000)	2011
Subject to amortization:
Noncompetition agreements	$	180	7.0 years
Customer relationships		16,610	11.6 years
Use rights and other		7,410	19.5 years
		24,200	14.0 years
Not subject to amortization:
Use rights		14,583	N/A
Total	$	38,783

Estimated Amortization Expense for Intangible Assets

The estimated amortization expense for intangible assets for each of the next five years and thereafter is as follows:

(add 000)
2013	$	3,508
2014		3,214
2015		2,568
2016		2,337
2017		2,211
Thereafter		12,755
Total	$	26,593