Nature of Business and Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2020

Nature of Business and Significant Accounting Policies [Abstract]

Inventories

Inventories consisted of the following as of December 31:

	2020		2019
Finished Goods	$	1,343	$	750
Work in Process		342		79
Raw Materials		1,272		968
Total	$	2,957	$	1,797

Estimated Useful Lives

Depreciation expense has been calculated using the following estimated useful lives:

Production Equipment	3-7 years
Office Furniture and Fixtures	3-5 years
Computer Software and Equipment	3-4 years
Loaners and demo equipment	1-5 years
Leasehold improvements	3-5 years

Potential Shares of Common Stock not Included in Diluted Net Loss Per Share

The following table sets forth the potential shares of common stock that are not included in the calculation of diluted net loss per share because to do so would be anti-dilutive as of the end of each year presented:

	December 31,
	2020		2019
Stock options		16,889		13,471
Warrants to purchase common stock		1,631,948		231,629
Series F convertible preferred stock		14,224		18,190
Total		1,663,061		263,290

Reconciles Reported Net Loss with Reported Net Loss Per Share

The following table reconciles reported net loss with reported net loss per share for the years ended December 31:

(in thousands, except per share amounts)	2020			2019
Net loss	$	(15,836	)	$	(18,114	)
Deemed dividend to preferred stockholders (see Note 5)		(1,757	)		(4,509	)
Net loss after deemed dividend		(17,593	)		(22,623	)
Weighted average shares outstanding		1,649			81
Basic and diluted loss per share	$	(10.67	)	$	(278.90	)