Pension and Postretirement Benefits (Tables)

3 Months Ended

Mar. 31, 2018

Compensation And Retirement Disclosure [Abstract]

Components of Net Periodic Benefit Cost of Pension and Postretirement Benefit Plans

The components of net periodic benefit cost of our pension and postretirement benefit plans for the three months ended March 31, 2018 and 2017 consist of the following:

	Domestic Plans
	Pension Plans						Postretirement Benefit Plans						Foreign Pension Plans
(in thousands)	2018			2017			2018			2017			2018			2017
Service cost	$	2		$	9		$	24		$	30		$	142		$	130
Interest cost		187			229			94			126			92			114
Expected return on plan assets		(35	)		(39	)		—			—			(129	)		(148	)
Amortization of prior service credit		—			—			(84	)		(111	)		—			—
Recognized net actuarial loss		122			136			52			100			41			45
Net periodic benefit cost	$	276		$	335		$	86		$	145		$	146		$	141