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

3 Months Ended

Mar. 31, 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 March 31,
	2022		2021
Net sales:
Commercial	$	1,134	$	913
MMM products	927		1,724
Total net sales	$	2,061	$	2,637

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 March 31,
	2022		2021
Numerator:
Net loss	$	(2,821)	$	(1,642)
Denominator:
Basic and diluted weighted average shares of common stock outstanding	6,437		3,612

Schedule of warranty activity

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

	Three months ended March 31,
	2022		2021
Balance at beginning of period	$	295	$	227
Warranty accruals for current period sales	(1)		17
Adjustments to existing warranties	(15)		14
In kind settlements made during the period	(14)		(19)
Accrued warranty reserve at end of period	$	265	$	239

Summary of assets and liabilities measured on recurring basis