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Income Taxes (Schedule of Non-Current Income Taxes Receivable and Deferred) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Line Items]
Income taxes receivable	$ 10,518us-gaap_IncomeTaxesReceivableNoncurrent	$ 16,427us-gaap_IncomeTaxesReceivableNoncurrent
Deferred income taxes	59,022us-gaap_DeferredTaxAssetsNetNoncurrent	103,185us-gaap_DeferredTaxAssetsNetNoncurrent
Total noncurrent deferred taxes and taxes receivable	69,540	79,849
Error in the presentation of deferred tax assets and liabilities in balance sheets [Member] \| Total as previously reported in Balance Sheet [Member]
Income Tax Disclosure [Line Items]
Total noncurrent deferred taxes and taxes receivable		$ 119,612

Amount after allocation of valuation allowances of noncurrent deferred tax asset attributable to deductible temporary differences and carryforwards. Noncurrent assets are expected to be realized or consumed after one year (or the normal operating cycle, if longer).

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