Prepaid and Other Current Assets (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Income taxes receivable	$ 28,694us-gaap_IncomeTaxReceivable	$ 1,865us-gaap_IncomeTaxReceivable
Prepaid expenses	18,682us-gaap_PrepaidExpenseCurrent	12,730us-gaap_PrepaidExpenseCurrent
Deferred compensation plan assets	17,320	13,313
Deferred income taxes	22,462	3,097
Other	28,204us-gaap_OtherAssetsCurrent	5,694us-gaap_OtherAssetsCurrent
Total prepaid and other current assets	$ 115,362	$ 36,699

Deferred Compensation Arrangement With Individual, Cash Surrender Value

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- Definition

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.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

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Carrying amount as of the balance sheet date of income taxes previously overpaid to tax authorities (such as U.S. Federal, state and local tax authorities) representing refunds of overpayments or recoveries based on agreed-upon resolutions of disputes. Also called income tax refund receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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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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