Warrant Liability (Tables)

12 Months Ended

Dec. 31, 2021

Warrant Liability.

Schedule of weighted average assumptions

	Assumptions for Estimating Fair Value
	on Reporting Dates of:
	December 31,			December 31,
	2021			2020
Risk-free interest rate		0.05	%		0.12	%
Expected volatility		174.54	%		137.89	%
Expected term (in years)		0.1	years		1.1	years
Expected dividend yield		—			—
Exercise Price	$	8.00		$	8.00
Market value of common stock	$	2.30		$	1.25

Schedule of reconciliation company's liabilities at fair value on recurring basis

	Warrant Liability
	(in thousands)
Balance as of December 31, 2019	$	33
Change in fair value upon re-measurement		(16)
Balance as of December 31, 2020		17
Change in fair value upon re-measurement		(15)
Balance as of December 31, 2021	$	2