Derivative Liability (Tables)

3 Months Ended

Mar. 31, 2020

Derivative Liability

Schedule of Changes in Fair Value

	Three Months Ended March 31,
		2020		2019
Fair value of Exit Fee derivative liability at January 1	$	969	$	533
Change in estimated fair value of derivative liability		82		37
Fair value of Exit Fee derivative liability at March 31	$	1,051	$	570