Income Taxes (Balance Sheet Locations of Deferred Tax Assets and Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Current deferred income tax asset	$ 4,888	$ 5,840
Non-current deferred income tax asset	5,566	5,759
Current deferred income tax liability	(3,633)us-gaap_DeferredTaxLiabilitiesCurrent	0us-gaap_DeferredTaxLiabilitiesCurrent
Non-current deferred income tax liability	(5,893)	(11,672)
Net deferred income tax asset (liability)	$ 928us-gaap_DeferredTaxAssetsLiabilitiesNet	$ (73)us-gaap_DeferredTaxAssetsLiabilitiesNet

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

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

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