Stock-Based Compensation - (Tables)

12 Months Ended

Dec. 31, 2018

Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]

Schedule of total stock-based compensation expense

	Year Ended
	2018		2017
Service based awards:
Restricted stock awards	$	1,292,125	$	3,316,093
Restricted stock units		840,477		-
Stock option awards		1,588,291		3,858,503
		3,720,893		7,174,596
Performance based awards:
Restricted stock units		505,999		-
Stock option awards		160,662		-
		666,661		-
Total	$	4,387,554	$	7,174,596

Restricted stock awards

Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]

Schedule of restricted stock award

			Weighted Average
			Grant-Date
	Number of Shares		Fair Value
Outstanding at December 31, 2016	850,000	$	8.23
Granted	530,000	$	5.72
Outstanding at December 31, 2017	1,380,000	$	7.27
Forfeited	(333,200)	$	5.70
Outstanding at December 31, 2018	1,046,800	$	7.77

Restricted stock units - Service based awards

Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]

Schedule of restricted stock award

			Weighted Average
			Grant-Date
	Number of Shares		Fair Value
Unvested at December 31, 2017	-	$	-
Granted	571,459	$	4.38
Vested	(98,500)	$	4.70
Unvested at December 31, 2018	472,959	$	4.32

Restricted stock units - Performance based awards

Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]

Schedule of restricted stock award

			Weighted Average
			Grant-Date
	Number of Shares		Fair Value
Unvested at December 31, 2017	-	$	-
Granted
Performance-based	646,875	$	4.70
Market-based	342,083	$	4.07
Unvested at December 31, 2018	988,958	$	4.48

Schedule of fair value assumptions

	Year Ended December 31, 2018
Expected stock price volatility	70.0%
Risk-free interest rate	2.9% - 3.1%
Dividend yield rate	-
Term (years)	10.0

Stock option awards - Service based awards

Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]

Schedule of fair value assumptions

	December 31,
	2018	2017
Exercise price	$3.17 - $5.75	$6.09
Expected stock price volatility	67.5% - 69.9%	66.3%
Risk-free interest rate	2.7% - 3.2%	2.0%
Term (years)	5.0 - 6.5	6.0

Schedule of stock options

				Weighted
			Weighted	Average
	Shares		Average	Remaining		Aggregate
	Underlying		Exercise	Contractual		Intrinsic
	Options		Price	Term		Value
Outstanding at December 31, 2016	7,691,501	$	7.83	5.7	$	1,821,384
Granted	15,000	$	6.09	9.1
Exercised	(433,500)	$	6.45	-
Forfeited	(367,000)	$	7.85	-
Outstanding at December 31, 2017	6,906,001	$	7.92	5.1	$	976,335
Granted	1,447,479	$	4.55	9.3
Exercised	(267,500)	$	3.09	-
Forfeited	(229,500)	$	6.59	-
Outstanding at December 31, 2018	7,856,480	$	7.50	5.2	$	-
Exercisable at December 31, 2018	6,470,500	$	8.14	4.3	$	-

Stock option awards - Performance based awards

Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]

Schedule of fair value assumptions

	Year Ended December 31, 2018
Expected stock price volatility	70.0%
Risk-free interest rate	2.9%
Dividend yield rate	-
Term (years)	10.0

Schedule of stock options

			Weighted Average
			Exercise
	Number of Shares		Price
Outstanding at December 31, 2017	-	$	-
Granted
Performance-based	129,375	$	4.70
Market-based	258,750	$	4.70
Outstanding at December 31, 2018	388,125	$	4.70
Exercisable at December 31, 2018	-	$	-