Mergers and Acquisitions - Summary of Purchase Price of Acquisition and Resulting Goodwill (Detail) - Farmers Capital Bank Corporation [Member] $ in Thousands	Aug. 20, 2018 USD ($)
Purchase price:
Fair value of WesBanco shares issued	$ 391,267
Cash consideration for outstanding FFKT shares	37,634
Total purchase price	428,901
Fair value of:
Tangible assets acquired	1,369,536
Core deposit and other intangible assets acquired	39,992
Liabilities assumed	(1,431,663)
Net cash received in the acquisition	230,139
Fair value of net assets acquired	208,004
Goodwill recognized	$ 220,897

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination.

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