Accrued and Other Current Liabilities (Tables)

12 Months Ended

Dec. 31, 2019

Payables And Accruals [Abstract]

Schedule of Accrued and Other Current Liabilities

	December 31,
	2018		2019
	(In thousands)
Employee benefits	$	9,001	$	8,917
Other		1,853		1,684
Total	$	10,854	$	10,601