Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2020

Equity [Abstract]

Summary of Stock Option Activity

Stock option activity for the years ended December 31, 2020, 2019 and 2018 is as follows:

	Number of Shares	Weighted Average Exercise Price Per Share		Aggregate Intrinsic Value
Outstanding at January 1, 2018	2,712,954	$	2.98	$	1,190
Granted in 2018:
Officers and Directors	1,249,817	$	2.49
Others	1,299,360	2.60
Exercised	(350,441)	2.00
Forfeitures	(505,686)	3.48
Outstanding at December 31, 2018	4,406,004	$	3.19	$	4,172
Granted in 2019:
Officers and Directors	1,228,109	$	4.08
Others	1,160,643	4.51
Exercised	(799,800)	2.90
Forfeitures	(497,985)	2.03
Outstanding at December 31, 2019	5,496,971	$	3.64	$	15,455
Granted in 2020:
Officers and Directors	2,270,801	$	4.88
Others	1,254,711	5.58
Exercised	(1,400,003)	2.40
Forfeitures	(561,514)	4.65
Outstanding at December 31, 2020	7,060,966	$	4.55	$	2,831

Summary of Stock Options Outstanding

Options outstanding at December 31, 2020 are as follows:

Range of Exercise Prices	Number Outstanding	Weighted Average Remaining Contractual Life (Years)	Weighted Average Exercise Price		Aggregate Intrinsic Value
$1.00 – 5.00	4,553,296	8.13	$	3.66
$5.01 – 10.00	2,449,845	8.60	$	5.96
$10.01 – 15.00	30,325	4.14	$	13.09
$15.01 – 20.00	27,500	3.74	$	16.16
	7,060,966				$	2,831

Summary of Stock Options Exercisable

Options exercisable at December 31, 2020 are as follows:

Range of Exercise Prices	Number Outstanding	Weighted Average Remaining Contractual Life (Years)	Weighted Average Exercise Price		Aggregate Intrinsic Value
$1.00 – 5.00	2,233,552	7.47	$	3.57
$5.01 – 10.00	724,389	7.4	$	6.22
$10.01 – 15.00	30,325	4.14	$	13.09
$15.01 – 20.00	27,500	3.74	$	16.16
	3,015,766				$	1,570

Summary of Non-Vested Stock Options

Nonvested stock options as of December 31, 2020, and changes during the year then ended, are as follows:

Nonvested Shares	Shares	Weighted Average Grant Date Fair Value		Intrinsic Value
Nonvested at January 1, 2019	3,873,247
Granted	3,525,512
Vested	(2,892,808)
Forfeited	(460,751)
Nonvested at December 31, 2020	4,045,200	$	4.45	$	1,261

Summary of Restricted Stock Activity

Restricted stock activity during the year ended December 31, 2020 was as follows:

	Number of Restricted Shares	Weighted Average Fair Market Value Per RSU
Outstanding at January 1, 2020	1,648,559	$	3.86
Granted:
Officers and Directors	449,949	$	4.56
Employees	12,455	$	5.50
Vested	(762,987)	$	4.02
Forfeitures	(407,217)	$	4.31
Outstanding at December 31, 2020	940,759	$	3.71