Accounts Payable and Accrued Expenses

12 Months Ended

Dec. 31, 2017

Payables And Accruals [Abstract]

Accounts Payable and Accrued Expenses

8. Accounts Payable and Accrued Expenses

Accounts payable and accrued expenses consist of the following:

	December 31,
	2017		2016
Accounts payable	$	3,829	$	4,738
Accrued research projects		2,356		4,352
Accrued professional fees		384		163
Accrued compensation and benefits		1,864		1,514
Accrued other		73		766
	$	8,506	$	11,533