Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2011

Property, Plant and Equipment [Abstract]


	Useful lives	December 31,
	in years	2011		2010
	(In Thousands)

Machinery, equipment and automotive	3 - 30	$	239,322	$	217,539
Buildings and improvements	7 - 30		39,381		34,392
Furniture, fixtures and store equipment	3 - 10		5,926		5,952
Assets under capital leases	10		2,105		2,415
Land improvements	10		1,080		910
Construction in progress	N/A		23,714		9,549
Capital spare parts	N/A		7,407		5,577
Land	N/A		7,242		4,321

			326,177		280,655
Less accumulated depreciation and amortization			161,630		144,900

		$	164,547	$	135,755

- 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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