Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2019

Accounting Policies [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

The following table presents the computation of net loss per share (in thousands, except share and per share data):

	December 31,
(in thousands except share and per share data)	2019			2018
Numerator
Net loss	$	(11,978	)	$	(16,755	)
Preferred stock dividends	(1,501		)	(1,064		)
Net Loss allocable to common stock holders	$	(13,479	)	$	(17,819	)
Denominator
Weighted average common shares outstanding used to compute net loss per share, basic and diluted	10,840,870			10,838,731
Net loss per share of common stock, basic and diluted
Net loss per share	$	(1.24	)	$	(1.64	)

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

The following number of shares have been excluded from diluted net (loss) since such inclusion would be anti-dilutive:

	Year Ended December 31,
	2019	2018
Stock options outstanding	4,071,333	5,613,057
Warrants	35,517,329	36,267,329
Series C Preferred Stock	68,000	68,000
Series D Preferred Stock	3,000	3,000
Series E Preferred Stock	39,508,382	34,880,000
Series F Preferred Stock	3,991,753	3,810,000
Total	83,159,797	80,641,386