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

6 Months Ended

Jun. 30, 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				Six Months Ended
	June 30,				June 30,
	2020		2019		2020		2019
Beginning balance	$	331	$	321	$	300	$	423
Warranty accruals and adjustments		21		39		59		(39)
Warranty claims		(1)		(43)		(8)		(67)
Ending balance	$	351	$	317	$	351	$	317

Schedule of Potentially Dilutive Common Stock Equivalents

	Three Months Ended		Six Months Ended
	June 30,		June 30,
	2020	2019	2020	2019
Options	5,058,360	4,832,468	5,058,360	4,832,468
Warrants	15,265,773	19,295,773	15,265,773	19,295,773
Convertible preferred stock	7,545,333	7,545,333	7,545,333	7,545,333
Total potentially dilutive common stock equivalents	27,869,466	31,673,574	27,869,466	31,673,574

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		1,501
Balance as of June 30, 2020	$	1,524