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Subsequent Events (Additional Information) (Detail) (Vital Fluids [Member], USD $)
In Millions, unless otherwise specified
 0 Months Ended 3 Months Ended
Jan. 30, 2015
Mar. 31, 2015
Subsequent Event [Member]
    
Subsequent Event [Line Items]    
Business sold cash received $ 29.9us-gaap_ProceedsFromDivestitureOfBusinesses
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= ldl_VitalFluidsMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember		  
Scenario, Forecast [Member] | Minimum [Member]    
Subsequent Event [Line Items]    
Gain on disposal of business   10us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= ldl_VitalFluidsMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioForecastMember
Scenario, Forecast [Member] | Maximum [Member]    
Subsequent Event [Line Items]    
Gain on disposal of business   $ 12us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= ldl_VitalFluidsMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioForecastMember