Other Balance Sheet Items (Prepaid Expenses And Other Current Assets) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Balance Sheet Related Disclosures [Abstract]
Prepaid expenses	$ 16,190us-gaap_PrepaidExpenseCurrent	$ 13,502us-gaap_PrepaidExpenseCurrent
Non-trade receivables	24,821us-gaap_NontradeReceivables	39,884us-gaap_NontradeReceivables
Deferred Finance Costs, Current, Net	10,570us-gaap_DeferredFinanceCostsCurrentNet	10,705us-gaap_DeferredFinanceCostsCurrentNet
Deferred Tax Assets, Other	247	1,743
Other	647us-gaap_OtherAssetsCurrent	449us-gaap_OtherAssetsCurrent
Other current assets	$ 52,475	$ 66,283

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Net amount of current deferred finance costs capitalized at the end of the reporting period.

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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards, net of deferred tax liability attributable to taxable temporary differences expected to be realized or consumed within one year or operating cycle, if longer.

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Carrying amounts due as of the balance sheet date of the sum of amounts receivable other than from customers.

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Aggregate carrying amount, as of the balance sheet date, of current assets not separately disclosed in the balance sheet. Current assets are expected to be realized or consumed within one year (or the normal operating cycle, if longer).

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Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer.

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Amount of asset related to consideration paid in advance for costs that provide economic benefits within a future period of one year or the normal operating cycle, if longer.

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