Pension and Other Postretirement Benefits (Tables)

6 Months Ended

Jun. 30, 2019

Compensation And Retirement Disclosure [Abstract]

Contributions for Pension and Other Postretirement Benefits

Contributions were as follows:

	Six Months Ended June 30,
	2019		2018
U.S. defined benefit pension plans	$	534	$	0
Foreign defined benefit pension plans		301		1,124
Other postretirement benefits (e.g., net payments)		511		566
U.K. defined contribution pension plan		177		182
U.S. defined contribution plan		2,102		1,319

Net Periodic Pension and Other Postretirement Benefit Costs

Net periodic pension and other postretirement benefit costs include the following components:

	Three Months Ended June 30,						Six Months Ended June 30,
U.S. Defined Benefit Pension Plans	2019			2018			2019			2018
Service cost	$	191		$	474		$	385		$	809
Interest cost		2,309			2,071			4,529			4,111
Expected return on plan assets		(3,116	)		(3,319	)		(6,289	)		(6,603	)
Amortization of prior service (credit) cost		(3	)		12			6			25
Amortization of actuarial loss		268			380			576			855
Curtailment loss		0			21			0			21
Net benefit income	$	(351	)	$	(361	)	$	(793	)	$	(782	)

	Three Months Ended June 30,						Six Months Ended June 30,
Foreign Defined Benefit Pension Plans	2019			2018			2019			2018
Service cost	$	97		$	164		$	199		$	275
Interest cost		352			354			709			718
Expected return on plan assets		(584	)		(658	)		(1,175	)		(1,330	)
Amortization of prior service credit		(72	)		(85	)		(144	)		(173	)
Amortization of actuarial loss		163			190			329			384
Net benefit income	$	(44	)	$	(35	)	$	(82	)	$	(126	)

	Three Months Ended June 30,						Six Months Ended June 30,
Other Postretirement Benefit Plans	2019			2018			2019			2018
Service cost	$	68		$	126		$	156		$	228
Interest cost		106			122			211			247
Amortization of prior service credit		(532	)		(401	)		(1,021	)		(803	)
Amortization of actuarial gain		(106	)		(53	)		(189	)		(115	)
Curtailment gain		0			0			(15	)		0
Net benefit income	$	(464	)	$	(206	)	$	(858	)	$	(443	)