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

3 Months Ended

Mar. 31, 2020

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,
	2020		2019
Beginning balance	$	300	$	423
Warranty accruals and adjustments		38		(78)
Warranty claims		(7)		(24)
Ending balance	$	331	$	321

Schedule of Potentially Dilutive Common Stock Equivalents

	Three Months Ended
	March 31,
	2020	2019
Options	5,183,360	5,160,445
Warrants	19,295,773	9,055,773
Convertible preferred stock	7,545,333	7,545,333
Total potentially dilutive common stock equivalents	32,024,466	21,761,551

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, 2020	$	23
Fair value of warrants issuance during period		-
Change in fair value of warrant liability, net		20
Balance as of March 31, 2020	$	43