Accrued expenses consisted of the following (in thousands):
March 31, 2018
December 31, 2017
External research and preclinical development
$
6,682
5,875
Employee compensation and benefits
1,134
2,494
Professional fees
1,121
1,225
Facilities and other
43
134
8,980
9,728
No definition available.
Tabular disclosure of the components of accrued liabilities.