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
Jun. 30, 2013
Dec. 31, 2012
Jun. 30, 2012
Goodwill and Intangible Assets Disclosure [Abstract]      
Intangible assets subject to amortization, Gross carrying amount $ 14,198 $ 14,198 $ 14,198
Intangible assets subject to amortization, Accumulated amortization (4,667) (4,001) (3,300)
Intangible assets subject to amortization, Net carrying amount 9,531 10,197 10,898
Intangible assets not subject to amortization 27,421 27,421 27,421
Intangible assets, net $ 36,952 $ 37,618 $ 38,319