Pension and Postretirement Benefits (Tables)

6 Months Ended

Jun. 30, 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 June 30, 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	$	33		$	39		$	32		$	17		$	138		$	128
Interest cost		200			178			114			93			91			113
Expected return on plan assets		(45	)		(68	)		—			—			(126	)		(146	)
Amortization of prior service credit		—			—			(19	)		(105	)		—			—
Recognized net actuarial loss		124			94			65			20			39			45
Net periodic benefit cost	$	312		$	243		$	192		$	25		$	142		$	140

The components of net periodic benefit cost of our pension and postretirement benefit plans for the six months ended June 30, 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	$	35		$	48		$	56		$	47		$	280		$	258
Interest cost		387			407			208			219			183			226
Expected return on plan assets		(80	)		(107	)		—			—			(256	)		(294	)
Amortization of prior service credit		—			—			(103	)		(216	)		—			—
Recognized net actuarial loss		246			230			117			120			80			89
Net periodic benefit cost	$	588		$	578		$	278		$	170		$	287		$	279