Property and Equipment (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2012 Years	Dec. 31, 2011
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 402,085	$ 350,906
Less accumulated depreciation	(190,470)	(164,637)
Property and equipment, net	211,615	186,269
Land
Property, Plant and Equipment [Line Items]
Property and equipment, gross	23,194	22,501
Building
Property, Plant and Equipment [Line Items]
Property and equipment, gross	109,587	78,673
Property and equipment estimated useful life, maximum	30
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	186,303	156,884
Property and equipment estimated useful life, minimum	3
Property and equipment estimated useful life, maximum	7
Office equipment and other
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 83,001	$ 92,848
Property and equipment estimated useful life, minimum	3
Property and equipment estimated useful life, maximum	10

The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement.

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Gross amount, at the balance sheet date, of long-lived physical assets used in the normal conduct of business and not intended for resale. This can 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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- Definition

Tangible assets that are held by an entity for use in the production or supply of goods and services, for rental to others, or for administrative purposes and that are expected to provide economic benefit for more than one year; net of accumulated depreciation. 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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