Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets, Net and Goodwill (Summary Of Identifiable Intangible Assets) (Details)

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Intangible Assets, Net and Goodwill (Summary Of Identifiable Intangible Assets) (Details) - USD ($)
$ in Thousands
Jun. 30, 2015
Dec. 31, 2014
Jun. 30, 2014
Summary of Identifiable Intangible Assets [Line Items]      
Intangible assets subject to amortization, Gross carrying amount $ 37,198 $ 37,198 $ 40,698
Intangible assets subject to amortization, Accumulated amortization (11,461) (8,888) (6,898)
Intangible assets subject to amortization, Net carrying amount 25,737 28,310 33,800
Intangible assets not subject to amortization 115,421 115,421 115,421
Intangible assets, net 141,158 143,731 149,221
Patents And Purchased Technology [Member]      
Summary of Identifiable Intangible Assets [Line Items]      
Intangible assets subject to amortization, Gross carrying amount 14,198 14,198 14,198
Intangible assets subject to amortization, Accumulated amortization (7,326) (6,661) (5,997)
Customer Relationships [Member]      
Summary of Identifiable Intangible Assets [Line Items]      
Intangible assets subject to amortization, Gross carrying amount 23,000 23,000 23,000
Intangible assets subject to amortization, Accumulated amortization (4,135) (2,227) (318)
Order or Production Backlog [Member]      
Summary of Identifiable Intangible Assets [Line Items]      
Intangible assets subject to amortization, Gross carrying amount 0 0 3,500
Intangible assets subject to amortization, Accumulated amortization $ 0 $ 0 $ (583)