Subordinated Debt and Junior Subordinated Debt - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2016 USD ($)
Trust Preferred Securities [Line Items]
Description of deferment period for payment of interest on junior subordinated debt under trust	20 consecutive quarterly periods
Minimum assets to continue counting existing trust preferred securities	$ 15,000,000,000
WesBanco Capital Trust II [Member]
Trust Preferred Securities [Line Items]
Debt maturity date	Jun. 30, 2033
Variable rate based on the three-month LIBOR plus	3.15%
Your Community Bankshares, Inc [Member] | WesBanco Capital Trust II [Member]
Trust Preferred Securities [Line Items]
Subordinated debt outstanding	$ 26,000,000
Debt maturity date	Dec. 15, 2025
Fixed interest rate	6.25%
Debt callable date	Dec. 15, 2020
Variable rate based on the three-month LIBOR plus	4.59%