Benefit Plans

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



	For the Three Months Ended
	March 31,
	2013			2014
	(Dollars in thousands)
Service cost	$	489		$	473
Interest cost	1,985			2,169
Expected return on plan assets	(1,706		)	(1,938		)
Amortization of prior service cost	6			1
Net cost	$	774		$	705

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



	For the Three Months Ended
	March 31,
	2013			2014
	(Dollars in thousands)
Service cost	$	28		$	19
Interest cost	331			352
Amortization of prior service benefit	(50		)	(47		)
Net cost	$	309		$	324