Accrued Liabilities (Tables)

12 Months Ended

Dec. 31, 2018

Accrued Liabilities

Summary of accrued liabilities

Accrued liabilities consist of the following (in thousands):

	December 31,
	2018		2017
Accrued construction in progress	$	—	$	515
Accrued payroll and related benefits		1,008		493
Accrued clinical trial costs		271		—
Accrued operating expenses		719		450
Accrued financing costs		284		—
Accrued office lease		127		104
Accrued interest		2		2
Total accrued liabilities	$	2,411	$	1,564