Quarterly report pursuant to Section 13 or 15(d)

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

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Intangible Assets, Net (Summary Of Identifiable Intangible Assets) (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2012
Dec. 31, 2011
Mar. 31, 2011
Intangible Assets, Net [Abstract]      
Intangible assets subject to amortization, Gross carrying amount $ 14,198 $ 14,198 $ 14,198
Intangible assets subject to amortization, Accumulated amortization (2,949) (2,599) (1,547)
Intangible assets subject to amortization, Net carrying amount 11,249 11,599 12,651
Intangible assets not subject to amortization 27,421 27,421 27,421
Intangible assets, net $ 38,670 $ 39,020 $ 40,072