Benefit Plans

3 Months Ended

Mar. 31, 2020

Retirement Benefits [Abstract]

Benefit Plans

Retirement Plans and Postretirement Benefits

The components of our consolidated net pension costs are set forth in the following table:

	For the Three Months Ended March 31,
	2020			2019
	(Dollars in thousands)
Service cost	$	622		$	575
Interest cost	1,033			1,316
Expected return on plan assets	(1,284		)	(1,338		)
Net cost	$	371		$	553

The components of our consolidated net postretirement costs are set forth in the following table: 

	For the Three Months Ended March 31,
	2020		2019
	(Dollars in thousands)
Interest cost	$	191	$	242
Net cost	$	191	$	242