Pension (Tables)

6 Months Ended

Jun. 30, 2020

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						Six Months Ended
	June 30,						June 30,
	2020			2019			2020			2019
Service cost	$	—		$	189		$	—		$	381
Interest cost		168			259			336			519
Expected return on plan assets		(154	)		(229	)		(308	)		(461	)
Amortization of prior service cost		—			(25	)		—			(50	)
Amortization of actuarial loss		—			14			—			29
Net periodic pension cost	$	14		$	208		$	28		$	418