Retirement Plans

3 Months Ended

Mar. 31, 2017

Compensation and Retirement Disclosure [Abstract]

Retirement Plans

Retirement Plans

Pension Plans

Net pension income for our domestic and foreign plans was as follows:

	Three Months Ended
	March 31,			March 31,
	2017			2016
Net pension income	$	(433	)	$	(392	)

The components of net pension (income) expense for our domestic and foreign plans include the following: 

	DomesticPension Plans						Foreign Pension Plans
	Three Months Ended						Three Months Ended
	March 31,			March 31,			March 31,			March 31,
	2017			2016			2017			2016
Service cost	$	—		$	22		$	12		$	12
Interest cost	2,068			2,756			8			11
Expected return on plan assets (1)	(4,061		)	(4,744		)	(5		)	7
Amortization of loss	1,446			1,498			38			34
Other cost due to retirement	61			12			—			—
(Income) expense, net	$	(486	)	$	(456	)	$	53		$	64

(1) Expected return on plan assets is net of expected investment expenses and certain administrative expenses.

Other Post-retirement Benefit Plan

Net post-retirement expense for our other post-retirement plan includes the following components:

	Three Months Ended
	March 31,			March 31,
	2017			2016
Service cost	$	1		$	1
Interest cost	40			52
Amortization of gain	(25		)	(38		)
Post-retirement expense	$	16		$	15