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Stockholders' Equity (Deficit) (Tables)

12 Months Ended

Dec. 31, 2019

Federal Home Loan Banks [Abstract]

Summary of Preferred Stock Allocated to Investors

The Purchase Agreement provides for the Company to issue and sell to the Investor shares of the Company’s preferred stock in the amounts set forth in the following table (numbers have been adjusted for the February 2016 reverse stock split):

Convertible Preferred Stock		Shares				Price Per Share				Total Investment
Series AA-1			8,427,004			$	12.00			$	101,124,048
Series AA-2			7,223,145			$	6.00				43,338,870
			15,650,149							$	144,462,918

Summary of Stock Option Activity

Additional information with respect to both plans stock option activity is as follows:

		Number of Shares				Weighted Average Exercise Price
Outstanding at December 31, 2016			332,415			$	21.55
Granted			—			$	—
Exercised			—			$	—
Cancelled			(84,598	)		$	35.59
Outstanding at December 31, 2017			247,817			$	16.76
Granted			—			$	—
Exercised			—			$	—
Cancelled			(9,166	)		$	36.52
Outstanding at December 31, 2018			238,651			$	15.95
Granted			—			$	—
Exercised			—			$	—
Cancelled			—			$	—
Outstanding at December 31, 2019			238,651			$	15.95
Options exercisable at December 31, 2017			247,817			$	16.76
Options exercisable at December 31, 2018			238,651			$	15.95
Options exercisable at December 31, 2019			238,651			$	15.95

Stock Options Outstanding

The following table summarizes information about stock options outstanding at December 31, 2019:

Stock Options Outstanding
Range of Exercise Prices		Number of Shares Outstanding				Weighted Average Remaining Contractual Life in Years				Weighted Average Exercise Price
$26.40 - $26.40			75,158				4.00			$	26.40
$12.48 - $12.84			141,000				5.00			$	12.48
$2.02 -  $3.59			22,493				6.65			$	2.74
			238,651				4.84			$	15.95

Estimated Fair Value of Restricted Stock Award

A summary of the status of the restricted stock awards as of December 31, 2018 and changes during the year ended December 31, 2018 is presented as follows:

		Number of Shares				Weighted Average Grant Date Fair Value
Unvested at December 31, 2018			41,667			$	11.04
Granted			—			$	—
Vested			—			$	—
Cancelled			—			$	—
Unvested at December 31, 2019			41,667			$	11.04

Summary of Common Stock Warrants Outstanding

The following table summarizes our common stock warrants outstanding at December 31, 2019:

Common Stock Warrants				Exercise Price				Termination Date
120,000				$	3.52				10/01/2021
196,135				$	5.76				07/08/2024
700,000					7.16				11/02/2023
1,016,135

Summary of Analysis of Activity in CARs Balances

The following is an analysis of activity in the CARs balances as of December 31, 2019:

		Number of CARs
		Key Employee Plan				Nonemployee Director Plan
Unvested at December 31, 2018			385,580				—
Granted			—				—
Vested			(249,879	)			—
Cancelled			—				—
Unvested at December 31, 2019			135,701				—

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Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms.

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Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for stock appreciation rights awards that were outstanding at the beginning and end of the year, and the number of stock appreciation rights awards that were granted, exercised or converted, forfeited, and expired during the year.

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Tabular disclosure of warrants or rights issued. Warrants and rights outstanding are derivative securities that give the holder the right to purchase securities (usually equity) from the issuer at a specific price within a certain time frame. Warrants are often included in a new debt issue to entice investors by a higher return potential. The main difference between warrants and call options is that warrants are issued and guaranteed by the company, whereas options are exchange instruments and are not issued by the company. Also, the lifetime of a warrant is often measured in years, while the lifetime of a typical option is measured in months. Disclose the title of issue of securities called for by warrants and rights outstanding, the aggregate amount of securities called for by warrants and rights outstanding, the date from which the warrants or rights are exercisable, and the price at which the warrant or right is exercisable.

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