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,
	2019			2018
	(Dollars in thousands)
Service cost	$	575		$	498
Interest cost	1,316			1,241
Expected return on plan assets	(1,338		)	(1,502		)
Net cost	$	553		$	237

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



	For the Three Months Ended March 31,
	2019		2018
	(Dollars in thousands)
Interest cost	242		251
Net cost	$	242	$	251