Accrued Expenses

6 Months Ended

Jun. 30, 2019

Accrued Expenses [Abstract]

Accrued Expenses

7.  Accrued Expenses

Accrued expenses consisted of the following (in thousands):

	June 30,		December 31,
	2019		2018
Compensation expense	$	1,011	$	938
Accrued clinical		389		156
Professional fees		211		274
Supplies		92		53
	$	1,703	$	1,421