Property, Plant and Equipment (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011		Dec. 31, 2010		Dec. 31, 2009
Property, Plant and Equipment [Line Items]
Property, plant and equipment at cost	$ 642,256		$ 646,235		$ 613,377
Less accumulated depreciation and amortization	449,562		442,773
Property, plant and equipment, net	192,694		203,462
Depreciation	50,549		51,425		50,085
Land and land improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment at cost	7,855		5,446
Estimated Useful Life, Minimum (years)	0
Estimated Useful Life, Maximum (years)	15
Buildings and building equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment at cost	66,261		61,100
Estimated Useful Life, Average (years)	15
Machinery, tools, and equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment at cost	119,780		131,686
Estimated Useful Life, Minimum (years)	5
Estimated Useful Life, Maximum (years)	12
Leasehold improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment at cost	24,243	[1]	24,300	[1]
Estimated Useful Life, Maximum (years)	10	[1]
Computer equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment at cost	78,543		82,532
Estimated Useful Life, Minimum (years)	3
Estimated Useful Life, Maximum (years)	5
Computer software [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment at cost	170,614		164,708
Estimated Useful Life, Minimum (years)	5
Estimated Useful Life, Maximum (years)	10
Furniture and fixtures [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment at cost	76,962		77,125
Estimated Useful Life, Minimum (years)	5
Estimated Useful Life, Maximum (years)	8
Tooling [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment at cost	80,979		80,255
Estimated Useful Life, Minimum (years)	3
Estimated Useful Life, Maximum (years)	5
Construction in progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment at cost	$ 17,019		$ 19,083

[1] The estimated useful life for leasehold improvements is the lesser of 10 years or the term of the lease.