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Other Balance Sheet Items (Income Tax Receivables And Other Current Assets) (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Balance Sheet Related Disclosures [Abstract]    
Income tax and other receivables $ 20,839us-gaap_NontradeReceivables $ 24,821us-gaap_NontradeReceivables
Prepaid expenses 21,401us-gaap_PrepaidExpenseCurrent 16,190us-gaap_PrepaidExpenseCurrent
Deferred Finance Costs, Current, Net 10,534us-gaap_DeferredFinanceCostsCurrentNet 10,570us-gaap_DeferredFinanceCostsCurrentNet
Deferred Tax Assets, Net of Valuation Allowance, Current 252us-gaap_DeferredTaxAssetsNetCurrent 247us-gaap_DeferredTaxAssetsNetCurrent
Other Assets, Miscellaneous, Current 980us-gaap_OtherAssetsMiscellaneousCurrent 647us-gaap_OtherAssetsMiscellaneousCurrent
Other Assets, Current $ 54,006us-gaap_OtherAssetsCurrent $ 52,475us-gaap_OtherAssetsCurrent