Accrued and Other Current Liabilities (Tables)

6 Months Ended

Jun. 30, 2017

Payables And Accruals [Abstract]

Schedule of Accrued and Other Current Liabilities

	December 31,		June 30,
	2016		2017
	(In thousands)
Employee benefits	$	8,375	$	6,000
Professional fees		613		686
Other		1,636		1,704
Total	$	10,624	$	8,390