Goodwill and Other Intangible Assets - Wesbanco's Capitalized Other Intangible Assets and Related Accumulated Amortization (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Other intangible assets:
Gross carrying amount	$ 118,495	$ 119,387
Accumulated amortization	(52,166)	(38,954)
Net carrying amount of other intangible assets	$ 66,329	$ 80,433