Other Noncurrent Liabilities (Tables)

12 Months Ended

Dec. 31, 2021

Other Liabilities Disclosure [Abstract]

Summary of Other Noncurrent Liabilities

	December 31,
	2020		2021
	(In thousands)
Reserve for uncertain tax positions	$	1,717	$	1,724
OPEB		985		787
Insurance claims and expenses		653		632
Other		425		347
Total	$	3,780	$	3,490