Significant Accounting Policies Property, Plant and Equipment (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Property, Plant and Equipment [Line Items]
Impairment of goodwill	$ 0	$ 0	$ 29,748	[1]
Machinery, Equipment, Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	5 years
Software, Computer Hardware and Manufacturing Test [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	3 years
Engineering Demonstration Products and Samples [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	1 year

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