Accrued expenses consist of the following (in thousands):
March 31, 2017
December 31, 2016
Employee compensation and benefits
$
831
1,911
External research and preclinical development
2,482
3,290
Professional fees
631
819
Facilities
41
90
Restricted stock liability
4
5
3,989
6,115
No definition available.
Tabular disclosure of the components of accrued liabilities.