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Income Taxes (Schedule of Components of Income Tax Provision) (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Current tax expense (benefit):      
Federal $ 1,889us-gaap_CurrentFederalTaxExpenseBenefit $ (633)us-gaap_CurrentFederalTaxExpenseBenefit $ (1,948)us-gaap_CurrentFederalTaxExpenseBenefit
State (2)us-gaap_CurrentStateAndLocalTaxExpenseBenefit 41us-gaap_CurrentStateAndLocalTaxExpenseBenefit (51)us-gaap_CurrentStateAndLocalTaxExpenseBenefit
Foreign 3us-gaap_CurrentForeignTaxExpenseBenefit 12us-gaap_CurrentForeignTaxExpenseBenefit 21us-gaap_CurrentForeignTaxExpenseBenefit
Total current 1,890us-gaap_CurrentIncomeTaxExpenseBenefit (580)us-gaap_CurrentIncomeTaxExpenseBenefit (1,978)us-gaap_CurrentIncomeTaxExpenseBenefit
Deferred tax expense (benefit):      
Federal (8,215)us-gaap_DeferredFederalIncomeTaxExpenseBenefit (4,766)us-gaap_DeferredFederalIncomeTaxExpenseBenefit (1,074)us-gaap_DeferredFederalIncomeTaxExpenseBenefit
State         
Total deferred (8,215)us-gaap_DeferredIncomeTaxExpenseBenefit (4,766)us-gaap_DeferredIncomeTaxExpenseBenefit (1,074)us-gaap_DeferredIncomeTaxExpenseBenefit
Income tax benefit $ (6,325)us-gaap_IncomeTaxExpenseBenefit $ (5,346)us-gaap_IncomeTaxExpenseBenefit $ (3,052)us-gaap_IncomeTaxExpenseBenefit