Stockholders' Equity (Tables)

6 Months Ended

Jun. 30, 2020

Stockholders' Equity Note [Abstract]

Share-based Compensation, Stock Options, Activity

Warrant activity for the six months ended June 30, 2020 is presented in the table below:

	Number of Shares		Weighted- average Exercise Price		Weighted- average Remaining Contractual Term (years)	Aggregate Intrinsic Value (in thousands)
Outstanding at December 31, 2019	342,610		$	9.77	3.71	$	1,585
Exercised	(59,510	)	$	10.00
Forfeited	(4,300	)	$	10.00
Outstanding at June 30, 2020	278,800		$	9.72	4.01	$	40
Exercisable at June 30, 2020	278,800		$	9.72	4.01	$	40

Stock option activity for the Pre-2017 Non-Qualified Stock Options for the six months ended June 30, 2020 is presented in the table below:

	Number of Shares		Weighted- average Exercise Price		Weighted- average Remaining Contractual Term (years)	Aggregate Intrinsic Value (in thousands)
Outstanding at December 31, 2019	2,500,500		$	7.03	5.05	$	18,426
Exercised	(20,000	)	9.50
Forfeited	(15,000	)	10.00
Outstanding at June 30, 2020	2,465,500		$	6.99	4.60	$	5,110

Stock option activity for options granted under the 2017 Plan during the six months ended June 30, 2020 is presented in the table below:

	Number of Options Outstanding		Weighted-average Exercise Price		Weighted-average Remaining Contractual Term (years)	Aggregate Intrinsic Value (in thousands)
Balance at December 31, 2019	491,950		$	24.08	8.43	$	82
Granted	191,500		$	12.12
Exercised	—		—
Forfeited	(33,300	)	$	15.75
Balance at June 30, 2020	650,150		$	20.98	8.40	$	3

Schedule of Nonvested Share Activity

A summary of the status of the Company’s non-vested Pre-2017 Non-Qualified Stock Options as of June 30, 2020 is presented below:

	Number of Options	Weighted Average Grant Date Fair Value
Vested at June 30, 2020	2,430,502	$	6.95
Non-vested at June 30, 2020	34,998	$	10.00

A summary of the status of the Company’s vested and non-vested options granted under the 2017 Plan as of June 30, 2020 is presented in the following table:

	Number of Shares	Weighted Average Grant Date Fair Value Per Share
Vested at June 30, 2020	390,129	25.98
Non-vested at June 30, 2020	260,021	$	15.51

Schedule of Assumptions Used in the Valuation

The assumptions used in the valuation of options granted under the 2017 Plan during the six months ended June 30, 2020 were as follows:

	For the Six Months Ended June 30, 2020
Market value of stock on measurement date	$8.79 to $13.60
Risk-free interest rate	0.33% to 1.68%
Dividend yield	—
Volatility factor	91.07% to 101.21%
Term	5.50 to 6.25 Years

Restricted Stock Activity

The following summarizes the restricted stock activity under the Company's 2017 Plan during the six months ended June 30, 2020:

	Number of Shares		Weighted Average Fair Value Per Share
Restricted stock outstanding and unvested at December 31, 2019	27,000		$	14.51
Restricted stock granted	49,600		$	12.00
Restricted stock forfeited	(13,500	)	$	14.51
Restricted stock outstanding and unvested at June 30, 2020	63,100		$	12.54