Accrued Expenses (Tables)

6 Months Ended

Jun. 30, 2017

Text Block [Abstract]

Schedule of Accrued Expenses

Accrued expenses consist of the following (in thousands):

	June 30, 2017		December 31, 2016
Research and development costs	$	9,688	$	6,855
Payroll and employee-related costs		2,138		3,476
Professional fees		779		480
Other		271		551
	$	12,876	$	11,362