Other Noncurrent Liabilities (Tables)

3 Months Ended

Mar. 31, 2020

Other Liabilities Disclosure [Abstract]

Summary of Other Noncurrent Liabilities

	December 31,		March 31,
	2019		2020
	(In thousands)
Reserve for uncertain tax positions	$	4,053	$	4,053
OPEB		1,129		1,068
Insurance claims and expenses		665		686
Other		413		386
Total	$	6,260	$	6,193