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Employee Benefit Plans (Schedule of Pension Weighted Average Asset Allocations) (Details) | Dec. 31, 2014 | Dec. 31, 2013
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Defined Benefit Plan Disclosure [Line Items] |  |
Asset allocations |  | 100.00%us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations
Equity securities [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Asset allocations |  | 6.00%us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember
Debt securities [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Asset allocations |  |
Domestic real estate funds [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Asset allocations |  |
Money market funds [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Asset allocations |  | 94.00%us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_MoneyMarketFundsMember

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- Definition Percentage of fair value of investments (categorized by debt securities, equity securities, real estate and other plan assets) to the fair value of plan assets held. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e2446-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 + Details
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