Description of the Business and Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2021

Description of the Business and Summary of Significant Accounting Policies [Abstract]

Summary of Activity Related to Warranty Liability Included in Other Current Liabilities

	Three Months Ended
	March 31,
	2021		2020
Beginning balance	$	615	$	300
Warranty accruals and adjustments		(142)		38
Warranty claims		(8)		(7)
Ending balance	$	465	$	331

Schedule of Potentially Dilutive Common Stock Equivalents

	Three Months Ended
	March 31,
	2021	2020
Options	4,098,256	5,183,360
Warrants	9,701,474	19,295,773
Preferred Stock- Series B	18,726,009	7,545,333
Total potentially dilutive common stock equivalents	32,525,739	32,024,466

Reconciliation of the Level 3 Warrant Liability Measured and Recorded at Fair Value on a Recurring Basis

	Estimated Fair Value
Balance as of January 1, 2021	$	4,622
Fair value of warrants issuance during period		-
Change in fair value of warrant liability, net		7,208
Balance as of March 31, 2021	$	11,830