Employee Benefits (Tables)

3 Months Ended

Mar. 31, 2019

Retirement Benefits [Abstract]

Components of net periodic benefit cost

The components of net periodic benefit costs related to pension benefits are as follows: 

	Three Months Ended March 31,
	2019						2018
	U.S Plans			Non-U.S. Plans			U.S Plans			Non-U.S. Plans
	(In thousands)
Service cost	$	753		$	389		$	887		$	651
Interest cost	1,938			533			1,795			541
Expected return on plan assets	(2,517		)	(633		)	(2,452		)	(700		)
Amortization of prior service cost	—			9			1,235			3
Amortization of net actuarial loss	845			106			—			168
Net periodic benefit cost	$	1,019		$	404		$	1,465		$	663

The components of net periodic benefit cost related to other post-retirement benefits are as follows:

	Three Months Ended March 31,
	2019			2018
	U.S Plans			U.S Plans
	(In thousands)
Service cost	$	90		$	155
Interest cost	240			335
Amortization of prior service cost	(437		)	188
Amortization of net actuarial loss	175			—
Net periodic benefit cost	$	68		$	678