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Total amount of export sales incurred during the reporting period.

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No definition available.

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The percentage of accounts receivable from significant customer.

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No definition available.

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The percentage of foreign and export sales during the period.

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The percentage represents the sales to automotive market during the financial period.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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No definition available.

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Cash received from customers as progress payments on projects that have been partially completed.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 25

-Subparagraph (a)

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The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

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The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

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-Name Accounting Standards Codification

-Topic 985

-SubTopic 20

-Section 50

-Paragraph 1

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Significant Accounting Policies (Additional Information) (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended			0 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Jan. 30, 2015
Accounting Policies [Line Items]
Percentage Of Accounts Receivable From Significant Customer		15.30%
Percentage Of Foreign And Export Sales	46.20%ldl_PercentageOfForeignAndExportSales	45.20%ldl_PercentageOfForeignAndExportSales	46.70%ldl_PercentageOfForeignAndExportSales
Export Sales	$ 57.6ldl_ExportSales	$ 52.1ldl_ExportSales	$ 49.7ldl_ExportSales
Percentage Of Sales To Automotive Market	54.10%ldl_PercentageOfSalesToAutomotiveMarket	68.50%ldl_PercentageOfSalesToAutomotiveMarket	65.50%ldl_PercentageOfSalesToAutomotiveMarket
Proceeds from Customers for Progress Payments	1.1	1.1
Finite-Lived Intangible Asset, Useful Life	11 years
Research and Development Expense	9.0us-gaap_ResearchAndDevelopmentExpense	7.6us-gaap_ResearchAndDevelopmentExpense	7.7us-gaap_ResearchAndDevelopmentExpense
Maximum [Member]
Accounting Policies [Line Items]
Finite-Lived Intangible Asset, Useful Life	20 years
Minimum [Member]
Accounting Policies [Line Items]
Finite-Lived Intangible Asset, Useful Life	4 years
Ford Motor Company [Member]
Accounting Policies [Line Items]
Percentage Of Foreign And Export Sales	16.50%	20.00%	18.80%
Chrysler Group Llc [Member]
Accounting Policies [Line Items]
Percentage Of Foreign And Export Sales		10.90%	10.00%
Vital Fluids [Member] \| Subsequent Event [Member]
Accounting Policies [Line Items]
Business sold cash received				$ 29.9