Property and Equipment, Net (Tables)

3 Months Ended

Mar. 31, 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)	March 31, 2012		December 31, 2011		March 31, 2011
Land and land improvements	$	125,596	$	124,216	$	124,932
Quarry property	177,274		175,612		173,067
Buildings and leasehold improvements	81,291		81,272		84,772
Equipment and vehicles	728,407		733,158		774,111
Office furniture and equipment	60,615		55,570		44,174
Property and equipment	1,173,183		1,169,828		1,201,056
Less: accumulated depreciation and depletion	731,051		722,688		732,127
Property and equipment, net	$	442,132	$	447,140	$	468,929

- 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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