Accrued and Other Current Liabilities (Tables)

3 Months Ended

Mar. 31, 2019

Payables And Accruals [Abstract]

Schedule of Accrued and Other Current Liabilities

	December 31,		March 31,
	2018		2019
	(In thousands)
Employee benefits	$	9,001	$	5,139
Other		1,853		2,039
Total	$	10,854	$	7,178