Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2020

Fair Value Measurements

Summary of information about the derivative, conversion option and warrant liabilities that were measured at fair value on a recurring basis

	March 31, 2020
	(unaudited)
(in thousands)	Level 1		Level 2		Level 3		Total
Warrant liability	$	—	$	—	$	2	$	2
Total fair value	$	—	$	—	$	2	$	2

	December 31, 2019
(in thousands)	Level 1		Level 2		Level 3		Total
Warrant liability	$	—	$	—	$	3	$	3
Total fair value	$	—	$	—	$	3	$	3

Summary of change in the estimated fair value of level 3 liabilities

	Three Months Ended
	March 31, 2020
	Warrant
	Liability
(in thousands)	(unaudited)
Beginning fair value of Level 3 liability	$	3
Change in fair value		(1)
Ending fair value of Level 3 liability	$	2