Accrued Expenses (Tables)

9 Months Ended

Sep. 30, 2018

Payables And Accruals [Abstract]

Schedule of Accrued Expenses

Accrued expenses consisted of the following:  

	September 30,		December 31,
	2018		2017
	(In thousands)
Employee compensation and benefits	$	5,119	$	4,773
Research and development and professional expenses		4,774		3,226
Accrued expenses	$	9,893	$	7,999