Mergers and Acquisitions - Summary of Purchase Price of Acquisition and Resulting Goodwill (Detail) - Old Line [Member] $ in Thousands	Nov. 22, 2019 USD ($)
Purchase price:
Fair value of Wesbanco shares issued	$ 493,936
Cash consideration for outstanding shares	16
Total purchase price	493,952
Fair value of:
Tangible assets acquired	2,894,254
Core deposit and other intangible assets acquired	32,899
Liabilities assumed	(2,721,999)
Net cash received in the acquisition	60,041
Fair value of net assets acquired	265,195
Goodwill recognized	$ 228,757

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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