Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Assets:
Cash and cash equivalents	$ 18,616	$ 60,044
Accounts receivable - net	94,370us-gaap_AccountsReceivableNetCurrent	91,106us-gaap_AccountsReceivableNetCurrent
Inventories - net	183,301us-gaap_InventoryNet	169,828us-gaap_InventoryNet
Prepaid and other current assets	29,415	27,701
Total current assets	325,702us-gaap_AssetsCurrent	348,679us-gaap_AssetsCurrent
Pension asset	848	848
Purchased intangible assets - net	17,125	17,771
Goodwill	164,112us-gaap_Goodwill	164,112us-gaap_Goodwill
Deferred income taxes	5,504	5,566
Other assets	14,515us-gaap_OtherAssetsNoncurrent	13,976us-gaap_OtherAssetsNoncurrent
Total other assets	202,104lby_AssetsExcludingPpeNoncurrent	202,273lby_AssetsExcludingPpeNoncurrent
Property, plant and equipment - net	280,896us-gaap_PropertyPlantAndEquipmentNet	277,978us-gaap_PropertyPlantAndEquipmentNet
Total assets	808,702us-gaap_Assets	828,930us-gaap_Assets
Liabilities and Shareholders' Equity:
Accounts payable	78,760us-gaap_AccountsPayableCurrent	82,485us-gaap_AccountsPayableCurrent
Salaries and wages	26,524us-gaap_AccruedSalariesCurrent	29,035us-gaap_AccruedSalariesCurrent
Accrued liabilities	43,541lby_AccruedAndOtherLiabilitiesCurrent	42,638lby_AccruedAndOtherLiabilitiesCurrent
Accrued income taxes	393us-gaap_AccruedIncomeTaxesCurrent	2,010us-gaap_AccruedIncomeTaxesCurrent
Pension liability (current portion)	1,460	1,488
Non-pension postretirement benefits (current portion)	4,800	4,800
Derivative liability	3,151us-gaap_DerivativeLiabilitiesCurrent	2,653us-gaap_DerivativeLiabilitiesCurrent
Deferred income taxes	3,633us-gaap_DeferredTaxLiabilitiesCurrent	3,633us-gaap_DeferredTaxLiabilitiesCurrent
Long-term debt due within one year	4,972us-gaap_LongTermDebtCurrent	7,658us-gaap_LongTermDebtCurrent
Total current liabilities	167,234us-gaap_LiabilitiesCurrent	176,400us-gaap_LiabilitiesCurrent
Long-term debt	438,320us-gaap_LongTermDebtNoncurrent	436,264us-gaap_LongTermDebtNoncurrent
Pension liability	54,417	56,462
Non-pension postretirement benefits	63,334	63,301
Deferred income taxes	5,729	5,893
Other long-term liabilities	14,104us-gaap_OtherLiabilitiesNoncurrent	13,156us-gaap_OtherLiabilitiesNoncurrent
Total liabilities	743,138us-gaap_Liabilities	751,476us-gaap_Liabilities
Shareholders' equity:
Common stock, par value $.01 per share, 50,000,000 shares authorized, 21,843,851 shares issued in 2015 (21,843,851 shares issued in 2014)	218us-gaap_CommonStockValue	218us-gaap_CommonStockValue
Capital in excess of par value	327,435	331,391
Treasury Stock, Value	(3,684)us-gaap_TreasuryStockValue	(1,060)us-gaap_TreasuryStockValue
Retained deficit	(113,938)	(114,648)
Accumulated other comprehensive loss	(144,467)	(138,447)
Total shareholders' equity	65,564us-gaap_StockholdersEquity	77,454us-gaap_StockholdersEquity
Total liabilities and shareholders' equity	$ 808,702	$ 828,930

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Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future.

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Amount of liabilities and equity items, including the portion of equity attributable to noncontrolling interests, if any.

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Total obligations incurred as part of normal operations that are expected to be paid during the following twelve months or within one business cycle, if longer.

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Amount of long-term debt, after unamortized discount or premium, scheduled to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Aggregate carrying amount, as of the balance sheet date, of noncurrent assets not separately disclosed in the balance sheet. Noncurrent assets are expected to be realized or consumed after one year (or the normal operating cycle, if longer).

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Aggregate carrying amount, as of the balance sheet date, of noncurrent obligations not separately disclosed in the balance sheet. Noncurrent liabilities are expected to be paid after one year (or the normal operating cycle, if longer).

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This represents the noncurrent liability recognized in the balance sheet that is associated with other postretirement defined benefit plans (excluding pension plans).

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For a classified balance sheet, the carrying amount as of the balance sheet date of the portion of the obligations recognized for the various benefits provided to former or inactive employees, their beneficiaries, and covered dependents after employment but before retirement that is payable within one year of the balance sheet date.

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Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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The cumulative amount of the reporting entity's undistributed earnings or deficit.

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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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The amount allocated to treasury stock. Treasury stock is common and preferred shares of an entity that were issued, repurchased by the entity, and are held in its treasury.

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