Accrued Expenses (Tables)

12 Months Ended

Dec. 31, 2015

Payables And Accruals [Abstract]

Components of Accrued Expenses

Accrued expenses are as follows:

	December 31,
	2015		2014
	(in thousands)
Accrued clinical	$	4,536	$	2,132
Accrued bonus		2,178		1,286
Professional fees		647		328
Accrued payroll		518		213
Accrued vacation		310		177
Accrued severance	—			179
Other		1,366		549
Total accrued expenses	$	9,555	$	4,864