| Component: (Network and Table) | |
|---|---|
| Network | 1089 - Disclosure - Goodwill and Other Intangible Assets - WesBanco's Capitalized Other Intangible Assets and Related Accumulated Amortization (Detail) (http://www.wesbanco.com/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsWesBancosCapitalizedOtherIntangibleAssetsAndRelatedAccumulatedAmortization) |
| Table | (Implied) |
| Reporting Entity [Axis] | 0000203596 (http://www.sec.gov/CIK) |
| Goodwill and Intangible Assets Disclosure [Abstract] | Period [Axis] | |
|---|---|---|
2016-12-31 | 2015-12-31 | |
Goodwill and Intangible Assets Disclosure [Abstract] | ||
Other intangible assets: | ||
Gross carrying amount | ||
Accumulated amortization | ( | ( |
Net carrying amount of other intangible assets | 19,384,000 | 10,336,000 |