Accrued Liabilities

12 Months Ended

Dec. 31, 2018

Accrued Liabilities

Accrued Liabilities

6. Accrued Liabilities

Accrued liabilities consist of the following:                                                                                                  

	December 31,
	2018		2017
Employee bonuses	$	621	$	215
Accrued retention bonus		638		—
Accrued interest payable		—		451
Accrued professional fees and other		84		186
Total accrued liabilities	$	1,343	$	852