Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2013

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	Mid-America Group		Southeast Group		West Group			Total
(add 000)	2013
Balance at beginning of period	$	263,868	$	50,001	$	302,335		$	616,204
Acquisitions		99		345		--			444
Amounts allocated to divestitures		--		--		(27	)		(27)
Balance at end of period	$	263,967	$	50,346	$	302,308		$	616,621
	2012
Balance at beginning of period	$	263,868	$	50,001	$	302,802		$	616,671
Adjustments to purchase price allocations		--		--		(467	)		(467)
Balance at end of period	$	263,868	$	50,001	$	302,335		$	616,204

Intangible Assets Subject to Amortization

Intangible assets subject to amortization consist of the following:

December 31	Gross Amount		Accumulated Amortization			Net Balance
(add 000)	2013
Noncompetition agreements	$	6,274	$	(5,583	)	$	691
Customer relationships		20,660		(6,160	)		14,500
Use rights and other		16,915		(7,550	)		9,365
Total	$	43,849	$	(19,293	)	$	24,556
	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

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)	2013
Use rights	$	21,470	$	--	$	21,470
Trade name		--		2,565		2,565
Total	$	21,470	$	2,565	$	24,035
	2012
Use rights	$	21,275	$	--	$	21,275
Trade name		--		2,565		2,565
Total	$	21,275	$	2,565	$	23,840

Other Intangibles for Aggregates Business

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

(add 000)	Amount		Weighted-average amortization period
Subject to amortization:
Customer relationships	$	500	7.0 years
Use rights and other		1,050	63.4 years
		1,550	45.2 years
Not subject to amortization:
Use rights		450	N/A
Total	$	2,000

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)
2014	$	3,370
2015		2,730
2016		2,424
2017		2,298
2018		2,166
Thereafter		11,568
Total	$	24,556