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Fair Value (Balance Sheet Location) (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Net derivative asset (liability) $ (3,012)lby_AssetsLiabilitiesNetFairValueDisclosureRecurring $ (2,465)lby_AssetsLiabilitiesNetFairValueDisclosureRecurring
Prepaid and other current assets [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Assets, fair value 477us-gaap_AssetsFairValueDisclosureRecurring
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember		 403us-gaap_AssetsFairValueDisclosureRecurring
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember
Derivative Liability, Current [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Liabilities, fair value (3,151)us-gaap_LiabilitiesFairValueDisclosureRecurring
/ us-gaap_BalanceSheetLocationAxis
= lby_DerivativeLiabilityCurrentMember		 (2,653)us-gaap_LiabilitiesFairValueDisclosureRecurring
/ us-gaap_BalanceSheetLocationAxis
= lby_DerivativeLiabilityCurrentMember
Other Long-Term Liabilities [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Liabilities, fair value $ (338)us-gaap_LiabilitiesFairValueDisclosureRecurring
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherNoncurrentLiabilitiesMember		 $ (215)us-gaap_LiabilitiesFairValueDisclosureRecurring
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherNoncurrentLiabilitiesMember