Pension (Tables)

9 Months Ended

Sep. 30, 2019

Compensation And Retirement Disclosure [Abstract]

Schedule of Net Benefit Costs

The following table summarizes the components of net periodic pension cost under the Dutch Plan (in thousands):

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2019			2018			2019			2018
Service cost	$	191		$	359		$	572		$	1,100
Interest cost		259			308			778			944
Expected return on plan assets		(231	)		(266	)		(692	)		(815	)
Amortization of prior service cost		(25	)		(19	)		(75	)		(58	)
Amortization of actuarial loss		15			84			44			252
Net periodic pension cost	$	209		$	466		$	627		$	1,423