XML 101 R58.htm IDEA: XBRL DOCUMENT v2.4.1.9
Benefit Plans and Other Postretirement Benefits, Changes in Level 3 Pension Plan Assets (Details) (Pension Plans, USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Changes in Level 3 Plan Assets [Roll Forward]      
Fair value of plan assets at Dec. 31 $ 132,713us-gaap_DefinedBenefitPlanFairValueOfPlanAssets $ 136,935us-gaap_DefinedBenefitPlanFairValueOfPlanAssets $ 136,546us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
Level 3
      
Changes in Level 3 Plan Assets [Roll Forward]      
Fair value of plan assets at Jan. 1 9,801us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
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Net realized gains (losses) 1,363us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsSoldDuringPeriod
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Net unrealized gains (losses) (1,431)us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsStillHeld
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Purchases, issuances and settlements, net (145)us-gaap_DefinedBenefitPlanPurchasesSalesAndSettlements
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Transfers in (out) of Level 3 0us-gaap_DefinedBenefitPlanTransfersBetweenMeasurementLevels
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Fair value of plan assets at Dec. 31 9,588us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
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Asset-backed securities
      
Changes in Level 3 Plan Assets [Roll Forward]      
Fair value of plan assets at Dec. 31 162us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
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= us-gaap_UnitedStatesPensionPlansOfUSEntityDefinedBenefitMember		  
Asset-backed securities | Level 3
      
Changes in Level 3 Plan Assets [Roll Forward]      
Fair value of plan assets at Jan. 1   749us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
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Net realized gains (losses)   0us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsSoldDuringPeriod
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Net unrealized gains (losses)   0us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsStillHeld
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Purchases, issuances and settlements, net   0us-gaap_DefinedBenefitPlanPurchasesSalesAndSettlements
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Transfers in (out) of Level 3   (749)us-gaap_DefinedBenefitPlanTransfersBetweenMeasurementLevels
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Fair value of plan assets at Dec. 31 0us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
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Mortgage-backed securities
      
Changes in Level 3 Plan Assets [Roll Forward]      
Fair value of plan assets at Dec. 31 475us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
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Mortgage-backed securities | Level 3
      
Changes in Level 3 Plan Assets [Roll Forward]      
Fair value of plan assets at Jan. 1   2,128us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
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Net realized gains (losses)   0us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsSoldDuringPeriod
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Net unrealized gains (losses)   0us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsStillHeld
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Purchases, issuances and settlements, net   0us-gaap_DefinedBenefitPlanPurchasesSalesAndSettlements
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Transfers in (out) of Level 3   (2,128)us-gaap_DefinedBenefitPlanTransfersBetweenMeasurementLevels
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Fair value of plan assets at Dec. 31 0us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
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Private equity investments
      
Changes in Level 3 Plan Assets [Roll Forward]      
Fair value of plan assets at Dec. 31 7,078us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
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Private equity investments | Level 3
      
Changes in Level 3 Plan Assets [Roll Forward]      
Fair value of plan assets at Jan. 1 7,502us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
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Net realized gains (losses) 1,197us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsSoldDuringPeriod
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Net unrealized gains (losses) (1,197)us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsStillHeld
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Purchases, issuances and settlements, net (424)us-gaap_DefinedBenefitPlanPurchasesSalesAndSettlements
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Transfers in (out) of Level 3 0us-gaap_DefinedBenefitPlanTransfersBetweenMeasurementLevels
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Fair value of plan assets at Dec. 31 7,078us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
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Real estate
      
Changes in Level 3 Plan Assets [Roll Forward]      
Fair value of plan assets at Dec. 31 2,510us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
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Real estate | Level 3
      
Changes in Level 3 Plan Assets [Roll Forward]      
Fair value of plan assets at Jan. 1 2,299us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
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Net realized gains (losses) 166us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsSoldDuringPeriod
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Net unrealized gains (losses) (234)us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsStillHeld
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Purchases, issuances and settlements, net 279us-gaap_DefinedBenefitPlanPurchasesSalesAndSettlements
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Fair value of plan assets at Dec. 31 $ 2,510us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
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= us-gaap_FairValueInputsLevel3Member		 $ 2,299us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
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= us-gaap_FairValueInputsLevel3Member		 $ 3,472us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
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[1] Transfers out of Level 3 into Level 2 were principally due to diminished use of unobservable inputs that were previously significant to these fair value measurements and were subsequently sold during 2013.