Accrued Expenses

9 Months Ended

Sep. 30, 2016

Payables And Accruals [Abstract]

Accrued Expenses

4. Accrued Expenses

Accrued expenses consist of the following:

	September 30, 2016		December 31, 2015
	(in thousands)
Development costs	$	12,840	$	6,466
Employee-related expenses		3,010		2,718
Professional services		1,225		935
Other accrued expenses		18		29
	$	17,093	$	10,148