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Derivative Liability (Tables)

9 Months Ended

Sep. 30, 2020

Derivative Liability

Schedule of Changes in Fair Value

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​	​	​	​	​	​	​	​
​	​	Nine Months Ended September 30,					​
​	​	​	2020	​	​	2019	​
Fair value of Exit Fee derivative liability at January 1	​	$	969	​	$	533	​
Change in estimated fair value of derivative liability	​	​	290	​	​	246	​
Fair value of Exit Fee derivative liability at September 30	​	$	1,259	​	$	779	​

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