Pension Plan (Tables)

6 Months Ended

Jun. 30, 2018

Retirement Benefits [Abstract]

Components of Net Periodic Pension Cost

The following table presents the net periodic pension cost for WesBanco’s Defined Benefit Pension Plan (the “Plan”) and the related components:

	For the Three Months Ended						For the Six Months Ended
	June 30,						June 30,
(unaudited, in thousands)	2018			2017			2018			2017
Service cost – benefits earned during year	$	707		$	643		$	1,406		$	1,279
Interest cost on projected benefit obligation		1,228			1,096			2,442			2,180
Expected return on plan assets		(2,390	)		(1,907	)		(4,753	)		(3,793	)
Amortization of prior service cost		7			6			13			12
Amortization of net loss		758			803			1,508			1,597
Net periodic pension cost	$	310		$	641		$	616		$	1,275