Property and Equipment, Net (Tables)

9 Months Ended

Sep. 30, 2012

Property, Plant and Equipment [Abstract]

Balances of major classes of assets and allowances for depreciation and depletion are included in property and equipment, net on our condensed consolidated balance sheets as follows:



(in thousands)	September 30, 2012		December 31, 2011		September 30, 2011
Land and land improvements	$	125,842	$	124,216	$	122,728
Quarry property	177,814		175,612		175,431
Buildings and leasehold improvements	80,916		81,272		81,217
Equipment and vehicles	718,965		733,158		753,776
Office furniture and equipment	64,767		55,570		48,996
Property and equipment	1,168,304		1,169,828		1,182,148
Less: accumulated depreciation and depletion	736,011		722,688		728,326
Property and equipment, net	$	432,293	$	447,140	$	453,822

- Definition

Tabular disclosure of the useful life and salvage value of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

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