Goodwill and Other Intangible Assets - WesBanco's Capitalized Other Intangible Assets and Related Accumulated Amortization (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Other intangible assets:
Gross carrying amount	$ 38,048	$ 38,048
Accumulated amortization	(30,640)	(28,720)
Net carrying amount of other intangible assets	$ 7,408us-gaap_FiniteLivedIntangibleAssetsNet	$ 9,328us-gaap_FiniteLivedIntangibleAssetsNet

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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- Definition

Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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- Definition

Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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