| 
           Income Taxes (Schedule Of Deferred Tax Assets And Liabilities) (Details) (USD $) 
        In Thousands, unless otherwise specified  | 
        
           Dec. 31, 2014 
         | 
        
           Dec. 31, 2013 
         | 
      
|---|---|---|
| Income Taxes [Abstract] | ||
| Allowance for doubtful accounts | $ 4us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts | $ 19us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts | 
| Inventory | 2,779us-gaap_DeferredTaxAssetsInventory | 3,295us-gaap_DeferredTaxAssetsInventory | 
| Accrued and prepaid expenses | 594us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities | 502us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities | 
| Domestic net operating loss carry-forward | 26us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsDomestic | |
| Long-term compensation plans | 380us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation | 373us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation | 
| Nonemployee director stock compensation | 403us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsOther | 243us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsOther | 
| Other stock compensation | 118us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost | 111us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost | 
| State income taxes | 75us-gaap_DeferredTaxAssetsStateTaxes | |
| Foreign net operating loss carry-forwards and credits | 1,743us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsForeign | 1,639us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsForeign | 
| Gross deferred tax assets | 6,021us-gaap_DeferredTaxAssetsGross | 6,283us-gaap_DeferredTaxAssetsGross | 
| Valuation allowance | (1,734)us-gaap_DeferredTaxAssetsValuationAllowance | (1,618)us-gaap_DeferredTaxAssetsValuationAllowance | 
| Net deferred tax assets | 4,287us-gaap_DeferredTaxAssetsNet | 4,665us-gaap_DeferredTaxAssetsNet | 
| Depreciation | (2,110)us-gaap_DeferredTaxLiabilitiesOther | (1,668)us-gaap_DeferredTaxLiabilitiesOther | 
| Intangible assets | (18)us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets | (47)us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets | 
| Gross deferred tax liability | (2,128)us-gaap_DeferredIncomeTaxLiabilities | (1,715)us-gaap_DeferredIncomeTaxLiabilities | 
| Total net deferred tax asset | $ 2,159us-gaap_DeferredTaxAssetsLiabilitiesNet | $ 2,950us-gaap_DeferredTaxAssetsLiabilitiesNet | 
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- Definition 
          Amount of deferred tax liability attributable to taxable temporary differences. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from inventory. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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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. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          Amount before allocation of valuation allowances of deferred tax asset attributable to deductible domestic operating loss carryforwards. Excludes state and local operating loss carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          Amount before allocation of valuation allowances of deferred tax asset attributable to deductible foreign operating loss carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from state taxes. No definition available. 
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- Definition 
          Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from employee compensation. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from other compensation and benefits not separately disclosed. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from share-based compensation. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from accrued liabilities. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from the allowance for doubtful accounts. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          Amount of deferred tax liability attributable to taxable temporary differences from intangible assets other than goodwill. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          Amount of deferred tax liability attributable to taxable temporary differences not separately disclosed. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Details 
          
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