Accrued Liabilities

12 Months Ended

Dec. 31, 2017

Accrued Liabilities Current [Abstract]

Accrued Liabilities

6. Accrued Liabilities

Accrued liabilities consisted of the following (in thousands):

	December 31,
	2017		2016
Research and clinical expenses	$	10,068	$	3,909
Payroll and related expenses		4,526		3,971
Legal and professional expenses		1,523		264
Property and equipment		—		331
Other accrued expenses		266		349
Total	$	16,383	$	8,824