Property And Equipment (Components Of Property And Equipment) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Property, Plant and Equipment [Line Items]
Gross property and equipment	$ 243,829	$ 216,716
Less accumulated depreciation and amortization	(146,007)	(129,623)
Net property and equipment	97,822	87,093
Buildings [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	2,086	2,036
Land [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	504	471
Machinery, Equipment And Tooling [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	81,464	76,617
Furniture And Office Equipment [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	12,003	11,456
Computers And Software [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	111,793	76,637
Automobiles [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	18	14
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	15,494	12,041
Projects In Progress - Computers And Software [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	9,135	26,844
Projects In Progress - Other [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	$ 11,332	$ 10,600

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.

+ References+ Details

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.

+ References+ Details

- 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.

+ References+ Details