Other Noncurrent Assets, Net (Tables)

3 Months Ended

Mar. 31, 2020

Deferred Costs Capitalized Prepaid And Other Assets Disclosure [Abstract]

Summary of Other Noncurrent Assets

	December 31,		March 31,
	2019		2020
	(In thousands)
Pension asset	$	4,294	$	4,106
Other		1,566		1,566
Total	$	5,860	$	5,672