Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2020

Fair Value Disclosures [Abstract]

Schedule of fair value of financial instruments

	June 30, 2020
	Level 1		Level 2		Level 3		Total
Financial Liabilities:
Common stock warrant liability	$	—	$	—	$	—	$	—
Total	$	—	$	—	$	—	$	—

		December 31, 2019
		Level 1		Level 2		Level 3		Total
Financial Assets:
Money market funds	$	—	$	—	$	—	$	—
Corporate fixed income debt securities		—		—		—		—
Total	$	—	$	—	$	—	$	—
Financial Liabilities:
Common stock warrant liability	$	—	$	—	$	—	$	—
Total	$	—	$	—	$	—	$	—