Accrued expenses

3 Months Ended

Mar. 31, 2017

Accrued expenses

Accrued expenses

. Accrued Expenses

Accrued expenses as of March 31, 2017 and December 31, 2016 consist of the following:

	As of March 31,		As of December 31,
	2017		2016
	(in thousands)
Research and development costs	$	2,774	$	2,384
Employee compensation costs		1,075		2,399
Professional services		977		698
Accrued goods and services		369		842
Other		312		76
Patent costs		86		89
Total	$	5,593	$	6,488