XML 79 R64.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Summary of Information on Plans' Assets, Projected Benefit Obligations (PBO), and Funded Status (Detail) (USD $) | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Pension Plans |  |  |
Schedule of Defined Benefit Plan Change in Benefit Obligation [Line Items] |  |  |
Service Cost | $ 3,006,000 us-gaap_DefinedBenefitPlanServiceCost / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember | $ 3,573,000 us-gaap_DefinedBenefitPlanServiceCost / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember | $ 3,227,000 us-gaap_DefinedBenefitPlanServiceCost / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember
Interest Cost | 5,092,000 us-gaap_DefinedBenefitPlanInterestCost / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember | 4,567,000 us-gaap_DefinedBenefitPlanInterestCost / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember | 4,633,000 us-gaap_DefinedBenefitPlanInterestCost / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember
Employer Contributions | 4,191,000 us-gaap_DefinedBenefitPlanContributionsByEmployer / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember | 3,700,000 us-gaap_DefinedBenefitPlanContributionsByEmployer / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember | 9,387,000 us-gaap_DefinedBenefitPlanContributionsByEmployer / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember
Benefits Paid | (4,246,000)us-gaap_DefinedBenefitPlanBenefitsPaid / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember | (3,764,000)us-gaap_DefinedBenefitPlanBenefitsPaid / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember | (4,456,000)us-gaap_DefinedBenefitPlanBenefitsPaid / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember
PBO at End of Year | 121,800,000 us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember | 96,900,000 us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember |
Funded Status: Assets vs PBO | (49,918,000)us-gaap_DefinedBenefitPlanFundedStatusOfPlan / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember | (25,744,000)us-gaap_DefinedBenefitPlanFundedStatusOfPlan / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember |
Pension Plans | Change in Plan Assets |  |  |
Schedule of Defined Benefit Plan Change in Benefit Obligation [Line Items] |  |  |
Plan Assets at Beginning of Year | 82,551,000 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInPlanAssetsMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember | 72,411,000 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInPlanAssetsMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember |
Actual Return on Plan Assets | 4,248,000 us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInPlanAssetsMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember | 10,204,000 us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInPlanAssetsMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember |
Employer Contributions | 4,191,000 us-gaap_DefinedBenefitPlanContributionsByEmployer / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInPlanAssetsMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember | 3,700,000 us-gaap_DefinedBenefitPlanContributionsByEmployer / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInPlanAssetsMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember |
Benefits Paid | (4,246,000)us-gaap_DefinedBenefitPlanBenefitsPaid / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInPlanAssetsMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember | (3,764,000)us-gaap_DefinedBenefitPlanBenefitsPaid / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInPlanAssetsMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember |
Plan Assets at End of Year | 86,744,000 utl_DefinedBenefitPlanFairValueOfPlanAssetsMeasuredOnRecurringBasisUnobservableInputs / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInPlanAssetsMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember | 82,551,000 utl_DefinedBenefitPlanFairValueOfPlanAssetsMeasuredOnRecurringBasisUnobservableInputs / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInPlanAssetsMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember |
Pension Plans | Change In Projected Benefit Obligation |  |  |
Schedule of Defined Benefit Plan Change in Benefit Obligation [Line Items] |  |  |
PBO at Beginning of Year | 108,295,000 us-gaap_DefinedBenefitPlanBenefitObligation / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInProjectedBenefitObligationMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember | 116,492,000 us-gaap_DefinedBenefitPlanBenefitObligation / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInProjectedBenefitObligationMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember |
Service Cost | 3,005,000 us-gaap_DefinedBenefitPlanServiceCost / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInProjectedBenefitObligationMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember | 3,573,000 us-gaap_DefinedBenefitPlanServiceCost / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInProjectedBenefitObligationMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember |
Interest Cost | 5,092,000 us-gaap_DefinedBenefitPlanInterestCost / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInProjectedBenefitObligationMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember | 4,567,000 us-gaap_DefinedBenefitPlanInterestCost / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInProjectedBenefitObligationMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember |
Benefits Paid | (4,246,000)us-gaap_DefinedBenefitPlanBenefitsPaid / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInProjectedBenefitObligationMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember | (3,764,000)us-gaap_DefinedBenefitPlanBenefitsPaid / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInProjectedBenefitObligationMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember |
Actuarial (Gain) or Loss | 24,516,000 us-gaap_DefinedBenefitPlanActuarialGainLoss / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInProjectedBenefitObligationMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember | (12,573,000)us-gaap_DefinedBenefitPlanActuarialGainLoss / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInProjectedBenefitObligationMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember |
PBO at End of Year | 136,662,000 us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInProjectedBenefitObligationMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember | 108,295,000 us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInProjectedBenefitObligationMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember |
Other Postretirement Benefit Plans, Defined Benefit |  |  |
Schedule of Defined Benefit Plan Change in Benefit Obligation [Line Items] |  |  |
Service Cost | 1,988,000 us-gaap_DefinedBenefitPlanServiceCost / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember | 2,523,000 us-gaap_DefinedBenefitPlanServiceCost / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember | 2,066,000 us-gaap_DefinedBenefitPlanServiceCost / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember
Interest Cost | 2,686,000 us-gaap_DefinedBenefitPlanInterestCost / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember | 2,448,000 us-gaap_DefinedBenefitPlanInterestCost / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember | 2,303,000 us-gaap_DefinedBenefitPlanInterestCost / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember
Employer Contributions | 3,650,000 us-gaap_DefinedBenefitPlanContributionsByEmployer / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember | 3,280,000 us-gaap_DefinedBenefitPlanContributionsByEmployer / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember | 2,190,000 us-gaap_DefinedBenefitPlanContributionsByEmployer / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember
Participant Contributions | 59,000 us-gaap_DefinedBenefitPlanContributionsByPlanParticipants / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember | 36,000 us-gaap_DefinedBenefitPlanContributionsByPlanParticipants / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember | 18,000 us-gaap_DefinedBenefitPlanContributionsByPlanParticipants / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember
Benefits Paid | (2,184,000)us-gaap_DefinedBenefitPlanBenefitsPaid / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember | (1,942,000)us-gaap_DefinedBenefitPlanBenefitsPaid / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember | (2,083,000)us-gaap_DefinedBenefitPlanBenefitsPaid / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember
Funded Status: Assets vs PBO | (61,083,000)us-gaap_DefinedBenefitPlanFundedStatusOfPlan / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember | (46,070,000)us-gaap_DefinedBenefitPlanFundedStatusOfPlan / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember |
Other Postretirement Benefit Plans, Defined Benefit | Change in Plan Assets |  |  |
Schedule of Defined Benefit Plan Change in Benefit Obligation [Line Items] |  |  |
Plan Assets at Beginning of Year | 10,829,000 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInPlanAssetsMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember | 8,301,000 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInPlanAssetsMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember |
Actual Return on Plan Assets | 486,000 us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInPlanAssetsMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember | 1,154,000 us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInPlanAssetsMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember |
Employer Contributions | 3,650,000 us-gaap_DefinedBenefitPlanContributionsByEmployer / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInPlanAssetsMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember | 3,280,000 us-gaap_DefinedBenefitPlanContributionsByEmployer / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInPlanAssetsMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember |
Participant Contributions | 59,000 us-gaap_DefinedBenefitPlanContributionsByPlanParticipants / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInPlanAssetsMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember | 36,000 us-gaap_DefinedBenefitPlanContributionsByPlanParticipants / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInPlanAssetsMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember |
Benefits Paid | (2,184,000)us-gaap_DefinedBenefitPlanBenefitsPaid / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInPlanAssetsMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember | (1,942,000)us-gaap_DefinedBenefitPlanBenefitsPaid / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInPlanAssetsMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember |
Plan Assets at End of Year | 12,840,000 utl_DefinedBenefitPlanFairValueOfPlanAssetsMeasuredOnRecurringBasisUnobservableInputs / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInPlanAssetsMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember | 10,829,000 utl_DefinedBenefitPlanFairValueOfPlanAssetsMeasuredOnRecurringBasisUnobservableInputs / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInPlanAssetsMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember |
Other Postretirement Benefit Plans, Defined Benefit | Change In Projected Benefit Obligation |  |  |
Schedule of Defined Benefit Plan Change in Benefit Obligation [Line Items] |  |  |
PBO at Beginning of Year | 56,899,000 us-gaap_DefinedBenefitPlanBenefitObligation / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInProjectedBenefitObligationMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember | 62,092,000 us-gaap_DefinedBenefitPlanBenefitObligation / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInProjectedBenefitObligationMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember |
Service Cost | 1,988,000 us-gaap_DefinedBenefitPlanServiceCost / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInProjectedBenefitObligationMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember | 2,523,000 us-gaap_DefinedBenefitPlanServiceCost / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInProjectedBenefitObligationMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember |
Interest Cost | 2,686,000 us-gaap_DefinedBenefitPlanInterestCost / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInProjectedBenefitObligationMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember | 2,448,000 us-gaap_DefinedBenefitPlanInterestCost / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInProjectedBenefitObligationMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember |
Participant Contributions | 59,000 us-gaap_DefinedBenefitPlanContributionsByPlanParticipants / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInProjectedBenefitObligationMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember | 36,000 us-gaap_DefinedBenefitPlanContributionsByPlanParticipants / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInProjectedBenefitObligationMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember |
Plan Amendments |  | (183,000)us-gaap_DefinedBenefitPlanPlanAmendments / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInProjectedBenefitObligationMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember |
Benefits Paid | (2,184,000)us-gaap_DefinedBenefitPlanBenefitsPaid / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInProjectedBenefitObligationMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember | (1,942,000)us-gaap_DefinedBenefitPlanBenefitsPaid / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInProjectedBenefitObligationMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember |
Actuarial (Gain) or Loss | 14,475,000 us-gaap_DefinedBenefitPlanActuarialGainLoss / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInProjectedBenefitObligationMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember | (8,075,000)us-gaap_DefinedBenefitPlanActuarialGainLoss / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInProjectedBenefitObligationMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember |
PBO at End of Year | 73,923,000 us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInProjectedBenefitObligationMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember | 56,899,000 us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInProjectedBenefitObligationMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember |
Supplemental Employee Retirement Plans, Defined Benefit |  |  |
Schedule of Defined Benefit Plan Change in Benefit Obligation [Line Items] |  |  |
Service Cost | 57,000 us-gaap_DefinedBenefitPlanServiceCost / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember | 73,000 us-gaap_DefinedBenefitPlanServiceCost / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember | 289,000 us-gaap_DefinedBenefitPlanServiceCost / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember
Interest Cost | 272,000 us-gaap_DefinedBenefitPlanInterestCost / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember | 241,000 us-gaap_DefinedBenefitPlanInterestCost / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember | 211,000 us-gaap_DefinedBenefitPlanInterestCost / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember
Employer Contributions | 53,000 us-gaap_DefinedBenefitPlanContributionsByEmployer / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember | 53,000 us-gaap_DefinedBenefitPlanContributionsByEmployer / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember | 53,000 us-gaap_DefinedBenefitPlanContributionsByEmployer / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember
Benefits Paid | (53,000)us-gaap_DefinedBenefitPlanBenefitsPaid / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember | (53,000)us-gaap_DefinedBenefitPlanBenefitsPaid / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember | (53,000)us-gaap_DefinedBenefitPlanBenefitsPaid / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember
PBO at End of Year | 6,300,000 us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember | 5,100,000 us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember |
Funded Status: Assets vs PBO | (7,965,000)us-gaap_DefinedBenefitPlanFundedStatusOfPlan / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember | (5,857,000)us-gaap_DefinedBenefitPlanFundedStatusOfPlan / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember |
Supplemental Employee Retirement Plans, Defined Benefit | Change in Plan Assets |  |  |
Schedule of Defined Benefit Plan Change in Benefit Obligation [Line Items] |  |  |
Employer Contributions | 53,000 us-gaap_DefinedBenefitPlanContributionsByEmployer / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInPlanAssetsMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember | 53,000 us-gaap_DefinedBenefitPlanContributionsByEmployer / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInPlanAssetsMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember |
Benefits Paid | (53,000)us-gaap_DefinedBenefitPlanBenefitsPaid / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInPlanAssetsMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember | (53,000)us-gaap_DefinedBenefitPlanBenefitsPaid / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInPlanAssetsMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember |
Supplemental Employee Retirement Plans, Defined Benefit | Change In Projected Benefit Obligation |  |  |
Schedule of Defined Benefit Plan Change in Benefit Obligation [Line Items] |  |  |
PBO at Beginning of Year | 5,857,000 us-gaap_DefinedBenefitPlanBenefitObligation / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInProjectedBenefitObligationMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember | 6,207,000 us-gaap_DefinedBenefitPlanBenefitObligation / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInProjectedBenefitObligationMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember |
Service Cost | 57,000 us-gaap_DefinedBenefitPlanServiceCost / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInProjectedBenefitObligationMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember | 73,000 us-gaap_DefinedBenefitPlanServiceCost / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInProjectedBenefitObligationMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember |
Interest Cost | 272,000 us-gaap_DefinedBenefitPlanInterestCost / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInProjectedBenefitObligationMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember | 241,000 us-gaap_DefinedBenefitPlanInterestCost / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInProjectedBenefitObligationMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember |
Benefits Paid | (53,000)us-gaap_DefinedBenefitPlanBenefitsPaid / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInProjectedBenefitObligationMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember | (53,000)us-gaap_DefinedBenefitPlanBenefitsPaid / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInProjectedBenefitObligationMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember |
Actuarial (Gain) or Loss | 1,832,000 us-gaap_DefinedBenefitPlanActuarialGainLoss / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInProjectedBenefitObligationMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember | (611,000)us-gaap_DefinedBenefitPlanActuarialGainLoss / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInProjectedBenefitObligationMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember |
PBO at End of Year | $ 7,965,000 us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInProjectedBenefitObligationMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember | $ 5,857,000 us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation / utl_DefinedBenefitPlanContributionsAxis = utl_ChangeInProjectedBenefitObligationMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember |

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- Definition For defined benefit pension plans, the actuarial present value of benefits (whether vested or nonvested) attributed by the pension benefit formula to employee service rendered before a specified date and based on employee service and compensation (if applicable) before that date. The accumulated benefit obligation differs from the projected benefit obligation in that it includes no assumption about future compensation levels. For plans with flat-benefit or nonpay-related pension benefit formulas, the accumulated benefit obligation and the projected benefit obligation are the same. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Accumulated Benefit Obligation -URI http://asc.fasb.org/extlink&oid=6503844 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 + Details
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- Definition The difference between fair value of plan assets at the end of the period and the fair value at the beginning of the period, adjusted for contributions and payments of benefits during the period, and after adjusting for taxes and other expenses, as applicable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Actual Return on Plan Assets (Component of Net Periodic Postretirement Benefit Cost) -URI http://asc.fasb.org/extlink&oid=6504192 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Actual Return on Plan Assets (Component of Net Periodic Pension Cost) -URI http://asc.fasb.org/extlink&oid=6504226 + Details
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- Definition Amount of gain (loss) related to change in benefit obligation resulting from changes in actuarial assumptions, for example, but not limited to, interest, mortality, employee turnover, salary, and temporary deviation from the substantive plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Glossary Gain or Loss -URI http://asc.fasb.org/extlink&oid=6514294 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 60 -Glossary Gain or Loss -URI http://asc.fasb.org/extlink&oid=6749293 + Details
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- Definition 1) For defined benefit pension plans, the benefit obligation is the projected benefit obligation, which is the actuarial present value as of a date of all benefits attributed by the pension benefit formula to employee service rendered prior to that date. 2) For other postretirement defined benefit plans, the benefit obligation is the accumulated postretirement benefit obligation, which is the actuarial present value of benefits attributed to employee service rendered to a particular date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Projected Benefit Obligation -URI http://asc.fasb.org/extlink&oid=6522206 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Accumulated Postretirement Benefit Obligation -URI http://asc.fasb.org/extlink&oid=6503904 + Details
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- Definition The amount of payments made for which participants are entitled under a pension plan, including pension benefits, death benefits, and benefits due on termination of employment. Also includes payments made under a postretirement benefit plan, including prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services. This item represents a periodic decrease to the plan obligations and a decrease to plan assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Postretirement Benefits -URI http://asc.fasb.org/extlink&oid=6521376 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 60 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6414203&loc=d3e39716-114964 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Glossary Benefits -URI http://asc.fasb.org/extlink&oid=6506267 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 60 -Glossary Benefits -URI http://asc.fasb.org/extlink&oid=6506309 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(6) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b)(5) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 + Details
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- Definition The increase in the fair value of plan assets from contributions made by the employer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b)(3) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 + Details
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- Definition The amount of contributions made by plan participants. This item represents a periodic increase to the plan obligation and an increase to plan assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b)(4) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 + Details
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- Definition Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Section 35 -Paragraph 50 -URI http://asc.fasb.org/extlink&oid=29635418&loc=d3e12355-114930 + Details
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- Definition The funded status is measured as the difference between the fair value of plan assets and the benefit obligation. Will normally be the same as the net Defined Benefit Plan, Amounts Recognized in Balance Sheet, Total. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=21915240&loc=d3e1703-114919 + Details
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- Definition The increase in a defined benefit pension plan's projected benefit obligation or a defined benefit postretirement plan's accumulated postretirement benefit obligation due to the passage of time. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(2) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 + Details
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- Definition The amount of increase or decrease due to a change in the terms of an existing plan or the initiation of a new plan. A plan amendment may increase or decrease benefits, including those attributed to years of service already rendered. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 60 -Glossary Plan Amendment -URI http://asc.fasb.org/extlink&oid=6520743 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Glossary Plan Amendment -URI http://asc.fasb.org/extlink&oid=6520782 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(7) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 + Details
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- Definition The actuarial present value of benefits attributed by the pension benefit formula to services rendered by employees during the period. The portion of the expected postretirement benefit obligation attributed to employee service during the period. The service cost component is a portion of the benefit obligation and is unaffected by the funded status of the plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Service Cost (Component of Net Periodic Pension Cost) -URI http://asc.fasb.org/extlink&oid=6525008 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 + Details
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- Definition Defined Benefit Plan Fair Value Of Plan Assets Measured On Recurring Basis Unobservable Inputs + References No definition available. + Details
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