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

6 Months Ended

Jun. 30, 2020

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 June 30,				Six months ended June 30,
	2020		2019		2020		2019
Net sales:
Commercial	$	1,058	$	2,131	$	2,794	$	4,114
MMM products	2,277		951		4,324		2,145
Total net sales	$	3,335	$	3,082	$	7,118	$	6,259

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 June 30,				Six months ended June 30,
	2020		2019		2020		2019
Numerator:
Net loss	$	(4,340)	$	(2,254)	$	(4,881)	$	(5,119)
Denominator:
Basic weighted average common shares outstanding *	3,192		2,467		3,139		2,446
* Shares outstanding for prior periods have been restated for the 1-for-5 stock split

Schedule of warranty activity

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

	Three months ended June 30,				Six months ended June 30,
	2020		2019		2020		2019
Balance at beginning of period	$	240	$	352	$	195	$	258
Warranty accruals for current period sales	—		17		7		29
Adjustments to existing warranties	(25)		(12)		19		77
In kind settlements made during the period	—		(15)		(6)		(22)
Accrued warranty reserve	$	215	$	342	$	215	$	342

Schedule of Assets and Liabilities Measured on Recurring Basis

The following table provides a summary of the financial assets and liabilities measured at fair value on a recurring basis as of June 30, 2020 (in thousands):

			Fair Value Measurements at June 30, 2020 Using
	Balance as of		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Description	June 30, 2020
Warrant liability	$	4,011	$	—	$	—	$	4,011

Level 3 Fair Value Reconciliation

A roll-forward of fair value measurements using significant unobservable inputs (Level 3) for the warrants is as follows (in thousands):

	Six months ended June 30, 2020
Balance January 1, 2020	$	—
Issuance of warrants, January 2020	1,636
Settlements from exercise	(52)
Loss from change in fair value of warrants	2,427
Balance June 30, 2020	$	4,011