Other Noncurrent Assets, Net (Tables)

9 Months Ended

Sep. 30, 2017

Deferred Costs Capitalized Prepaid And Other Assets Disclosure [Abstract]

Summary of Other Noncurrent Assets

	December 31,		September 30,
	2016		2017
	(In thousands)
Restricted cash	$	1,289	$	1,264
Pension asset		1,037		1,342
Other		950		964
Total	$	3,276	$	3,570