Accrued Expenses

3 Months Ended

Mar. 31, 2019

Accrued Expenses [Abstract]

Accrued Expenses

7.  Accrued Expenses

Accrued expenses consisted of the following (in thousands):

	March 31,		December 31,
	2019		2018
Compensation expense	$	672	$	938
Accrued clinical		429		156
Professional fees		315		274
Supplies		28		53
Other		75		—
	$	1,519	$	1,421