Income Taxes (Deferred Taxes Presented in the Balance Sheets) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Current deferred tax assets	$ 2,696	$ 2,522
Non-current deferred tax assets	12,907	15,012
Non-current deferred tax liabilities	(25,982)	(27,575)
Net deferred tax (liabilities) assets	$ (10,379)us-gaap_DeferredTaxAssetsLiabilitiesNet	$ (10,041)us-gaap_DeferredTaxAssetsLiabilitiesNet

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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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