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Acquisitions (Schedule Of Identifiable Intangible Assets At Fair Value) (Details) (Claude Laval Corporation [Member], USD $) In Thousands, unless otherwise specified	0 Months Ended
	Aug. 16, 2013
Indefinite-lived intangible assets	$ 6,500
Finite-lived intangible assets	7,100
Total intangible assets	13,600
Weighted average useful life in years	8 years
Patents [Member]
Finite-lived intangible assets	4,600
Weighted average useful life in years	10 years
Customer Relationships [Member]
Finite-lived intangible assets	1,600
Weighted average useful life in years	5 years
Noncompete Agreements [Member]
Finite-lived intangible assets	500
Weighted average useful life in years	5 years
Other Intangible Assets [Member]
Finite-lived intangible assets	400
Weighted average useful life in years	1 year 3 months 18 days
Trade Names [Member]
Indefinite-lived intangible assets	$ 6,500

X

- Definition

Total Intangible Assets Acquired

+ References

No definition available.

+ Details

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Namespace Prefix:	lnn_
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Balance Type:	debit
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X

- Definition

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (a)(3)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275

+ Details

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X

- Definition

Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, resulting from a business combination.

+ References

No definition available.

+ Details

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X

- Definition

Amount of increase in assets, excluding financial assets and goodwill, lacking physical substance with an indefinite life, resulting from a business combination.

+ References

No definition available.

+ Details

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