Basis of Presentation and Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2022

Accounting Policies [Abstract]

Disaggregation of revenue

The following table provides a disaggregation of product net sales for the periods presented (in thousands):

	Three months ended September 30,				Nine months ended September 30,
	2022		2021		2022		2021
Net sales:
Commercial	$	1,288	$	1,522	$	3,397	$	3,513
MMM products	476		1,227		1,908		3,947
Total net sales	$	1,764	$	2,749	$	5,305	$	7,460

Reconciliation of basic and diluted income (loss) per share

The following table presents a reconciliation of basic and diluted loss per share computations (in thousands):

	Three months ended September 30,				Nine months ended September 30,
	2022		2021		2022		2021
Numerator:
Net loss	$	(2,662)	$	(1,140)	$	(7,969)	$	(5,255)
Denominator:
Basic and diluted weighted average shares of common stock outstanding	9,190		5,086		7,608		4,309

Schedule of warranty activity

The following table summarizes warranty activity for the periods presented (in thousands):

	Three months ended September 30,				Nine months ended September 30,
	2022		2021		2022		2021
Balance at beginning of period	$	315	$	239	$	295	$	227
Warranty accruals for current period sales, net of changes in inventory reserves for replacements	(23)		10		(17)		49
Adjustments to existing warranties	(57)		4		(29)		16
In kind settlements made during the period	7		(13)		(7)		(52)
Accrued warranty reserve at end of period	$	242	$	240	$	242	$	240