Convertible Preferred Stock and Stockholders' Equity (Tables)

3 Months Ended

Mar. 31, 2019

Stockholders' Equity Note [Abstract]

Summary of Option and Stock Appreciation Rights Activity

A summary of the option and stock appreciation rights activity for the three month period ended March 31, 2019 is as follows:

	Number of Options/SARs			Range of Exercise Price		Weighted Average Exercise Price per Share
Outstanding, December 31, 2018		1,165,086			$0.74 - $43.90	$	2.54
Granted		982,000			$2.03	$	2.03
Exercised		(9,625	)		$0.74 - $0.83	$	0.74
Forfeited		(5,948	)		$0.74 - $4.04	$	1.59
Outstanding, March 31, 2019		2,131,513			$0.74 - $43.90	$	2.32

Summary of Restricted Stock Unit Activity

A summary of the restricted stock unit activity for the three month period ended March 31, 2019 is as follows:

	Number of Restricted Stock Units			Weighted Average Grant Date Fair Value per Unit
Outstanding, December 31, 2018		647,649		$	0.83
Granted		210,000		$	1.19
Vested		(166,962	)	$	1.12
Forfeited		(2,000	)	$	0.72
Outstanding, March 31, 2019		688,687		$	0.87