Basis of Financial Statement Presentation	9 Months Ended
Sep. 30, 2014
Accounting Policies [Abstract]
Basis of Financial Statement Presentation	Basis of Financial Statement Presentation Description of Business Lydall, Inc. and its subsidiaries (collectively, the “Company” or “Lydall”) design and manufacture specialty engineered filtration media, industrial thermal insulating solutions, automotive thermal and acoustical barriers, medical filtration media and devices and biopharmaceutical processing components for thermal/acoustical, filtration/separation, and bio/medical applications. On February 20, 2014, the Company completed an acquisition of certain industrial filtration businesses (“Industrial Filtration”) of Andrew Industries Limited, an Altham, United Kingdom based corporation. The Industrial Filtration business serves a global customer base in the manufacture of non-woven felt filtration media and filter bags used primarily in industrial air filtration applications including power, cement, asphalt, incineration, food and pharmaceutical. The Industrial Filtration business is being reported as its own reportable segment since the acquisition date. Basis of Presentation The accompanying Condensed Consolidated Financial Statements include the accounts of Lydall, Inc. and its subsidiaries. All financial information is unaudited for the interim periods reported. All significant intercompany transactions have been eliminated in the Condensed Consolidated Financial Statements. The Condensed Consolidated Financial Statements have been prepared, in all material respects, in accordance with the same accounting principles followed in the preparation of the Company’s annual financial statements for the year ended December 31, 2013. The operating results of the Industrial Filtration segment have been included in the Consolidated Statement of Operations since the date of the acquisition. The year-end Condensed Consolidated Balance Sheet was derived from the December 31, 2013 audited financial statements, but does not include all disclosures required by accounting principles generally accepted in the United States of America. Management believes that all adjustments, which include only normal recurring adjustments necessary for a fair statement of the Company’s condensed consolidated financial position, results of operations and cash flows for the periods reported, have been included. For further information, refer to the audited consolidated financial statements and accompanying notes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2013. Recently Adopted Accounting Pronouncements Effective January 1, 2014, the Company adopted the Financial Accounting Standards Board (“FASB”) Accounting Standards Update ("ASU") No. 2013-11, Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists (Topic 740). This ASU required entities to present an unrecognized tax benefit, or a portion of an unrecognized tax benefit, in their financial statements as a reduction to a deferred tax asset for a net operating loss carryforward, a similar tax loss, or a tax credit carryforward. The objective of this update is to eliminate the diversity in practice in the presentation of unrecognized tax benefits when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward exists. The adoption of this ASU did not have a significant impact on the Company’s condensed consolidated financial statements. In May 2014, the FASB issued ASU No. 2014-09, “Revenue from Contracts with Customers” (Topic 606). This ASU provides guidance for revenue recognition and affects any entity that either enters into contracts with customers to transfer goods or services or enters into contracts for the transfer of nonfinancial assets and supersedes the revenue recognition requirements in Topic 605, “Revenue Recognition,” and most industry-specific guidance. The standard’s core principle is the recognition of revenue when a company transfers promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. In doing so, companies will need to use more judgment and make more estimates than under the current guidance. These may include identifying performance obligations in the contract, estimating the amount of variable consideration to include in the transaction price and allocating the transaction price to each separate performance obligation. This ASU is effective for fiscal years beginning after December 15, 2016. Early adoption is not permitted. The Company is currently evaluating the method and impact the adoption of ASU 2014-09 will have on the Company’s condensed consolidated financial statements and disclosures. In June 2014, the FASB issued ASU No. 2014-12, “Compensation - Stock Compensation” (Topic 718): Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could be Achieved after the Requisite Service Period. This ASU affects entities that grant their employees share-based payments in which terms of the award provide that a performance target that affects vesting could be achieved after the requisite service period. The amendments in this ASU require that a performance target that affects vesting and that could be achieved after the requisite service period be treated as a performance condition. This ASU is effective for fiscal years beginning after December 15, 2015. Early adoption is permitted. The Company is currently evaluating the method and impact the adoption of ASU 2014-12 will have on the Company’s condensed consolidated financial statements and disclosures. In August 2014, the FASB issued ASU No. 2014-15, “Disclosure of Uncertainties about an Entity's Ability to Continue as a Going Concern” (Subtopic 205-40). This ASU establishes specific guidance to an organization's management on their responsibility to evaluate whether there is substantial doubt about the organization's ability to continue as a going concern. This ASU is effective for fiscal years beginning after December 15, 2016. Early adoption is permitted. This ASU is not expected to have an impact on the Company’s condensed consolidated financial statements and disclosures.

Basis of Financial Statement Presentation

Description of Business

Lydall, Inc. and its subsidiaries (collectively, the “Company” or “Lydall”) design and manufacture specialty engineered filtration media, industrial thermal insulating solutions, automotive thermal and acoustical barriers, medical filtration media and devices and biopharmaceutical processing components for thermal/acoustical, filtration/separation, and bio/medical applications.

On February 20, 2014, the Company completed an acquisition of certain industrial filtration businesses (“Industrial Filtration”) of Andrew Industries Limited, an Altham, United Kingdom based corporation. The Industrial Filtration business serves a global customer base in the manufacture of non-woven felt filtration media and filter bags used primarily in industrial air filtration applications including power, cement, asphalt, incineration, food and pharmaceutical. The Industrial Filtration business is being reported as its own reportable segment since the acquisition date.

Basis of Presentation

The accompanying Condensed Consolidated Financial Statements include the accounts of Lydall, Inc. and its subsidiaries. All financial information is unaudited for the interim periods reported. All significant intercompany transactions have been eliminated in the Condensed Consolidated Financial Statements. The Condensed Consolidated Financial Statements have been prepared, in all material respects, in accordance with the same accounting principles followed in the preparation of the Company’s annual financial statements for the year ended December 31, 2013. The operating results of the Industrial Filtration segment have been included in the Consolidated Statement of Operations since the date of the acquisition. The year-end Condensed Consolidated Balance Sheet was derived from the December 31, 2013 audited financial statements, but does not include all disclosures required by accounting principles generally accepted in the United States of America. Management believes that all adjustments, which include only normal recurring adjustments necessary for a fair statement of the Company’s condensed consolidated financial position, results of operations and cash flows for the periods reported, have been included. For further information, refer to the audited consolidated financial statements and accompanying notes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2013.

Recently Adopted Accounting Pronouncements

Effective January 1, 2014, the Company adopted the Financial Accounting Standards Board (“FASB”) Accounting Standards Update ("ASU") No. 2013-11, Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists (Topic 740). This ASU required entities to present an unrecognized tax benefit, or a portion of an unrecognized tax benefit, in their financial statements as a reduction to a deferred tax asset for a net operating loss carryforward, a similar tax loss, or a tax credit carryforward. The objective of this update is to eliminate the diversity in practice in the presentation of unrecognized tax benefits when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward exists. The adoption of this ASU did not have a significant impact on the Company’s condensed consolidated financial statements.

In May 2014, the FASB issued ASU No. 2014-09, “Revenue from Contracts with Customers” (Topic 606). This ASU provides guidance for revenue recognition and affects any entity that either enters into contracts with customers to transfer goods or services or enters into contracts for the transfer of nonfinancial assets and supersedes the revenue recognition requirements in Topic 605, “Revenue Recognition,” and most industry-specific guidance. The standard’s core principle is the recognition of revenue when a company transfers promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. In doing so, companies will need to use more judgment and make more estimates than under the current guidance. These may include identifying performance obligations in the contract, estimating the amount of variable consideration to include in the transaction price and allocating the transaction price to each separate performance obligation. This ASU is effective for fiscal years beginning after December 15, 2016. Early adoption is not permitted. The Company is currently evaluating the method and impact the adoption of ASU 2014-09 will have on the Company’s condensed consolidated financial statements and disclosures.

In June 2014, the FASB issued ASU No. 2014-12, “Compensation - Stock Compensation” (Topic 718): Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could be Achieved after the Requisite Service Period. This ASU affects entities that grant their employees share-based payments in which terms of the award provide that a performance target that affects vesting could be achieved after the requisite service period. The amendments in this ASU require that a performance target that affects vesting and that could be achieved after the requisite service period be treated as a performance condition. This ASU is effective for fiscal years beginning after December 15, 2015. Early adoption is permitted. The Company is currently evaluating the method and impact the adoption of ASU 2014-12 will have on the Company’s condensed consolidated financial statements and disclosures.

In August 2014, the FASB issued ASU No. 2014-15, “Disclosure of Uncertainties about an Entity's Ability to Continue as a Going Concern” (Subtopic 205-40). This ASU establishes specific guidance to an organization's management on their responsibility to evaluate whether there is substantial doubt about the organization's ability to continue as a going concern. This ASU is effective for fiscal years beginning after December 15, 2016. Early adoption is permitted. This ASU is not expected to have an impact on the Company’s condensed consolidated financial statements and disclosures.