Share-based Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2022

Share-Based Payment Arrangement [Abstract]

Total Share-Based Payments Expense

Total share-based payments expense was as follows:

	For the years ended
	For the Twelve Months Ended
		December 31, 2022		December 31, 2021		December 31, 2020
Stock options		$	9,485	$	13,988	$	9,700
Restricted share units		$	2,677	$	954	$	686
Warrants			—		—		89
Total share-based payments		$	12,162	$	14,942	$	10,475

Summary of Stock Option Activity

The following table summarizes the stock option activity:

	Number of Stock Options			Weighted average remaining contractual life (in years)		Weighted Average Exercise Price (per share) $		Aggregate intrinsic value		Weighted average fair value of nonvested options (per share) $
Outstanding, December 31, 2019		10,493,015			4.04	$	4.26	$	1,877	$	3.30
Granted		12,861,050					2.82
Exercised		(1,816,496	)				2.46
Forfeited (1)		(4,174,221	)				4.19
Outstanding, December 31, 2020		17,363,348			3.96	$	3.49	$	112,675	$	2.58
Granted		3,905,000					10.11
Exercised		(1,376,496	)				3.97
Forfeited (1)		(6,838,347	)				4.46
Expired		(198,986	)				5.95
Outstanding, December 31, 2021		12,854,519			4.84	$	4.85	$	27,557	$	4.22
Granted		7,058,840					3.69
Replacement options granted on acquisition of Gage		4,940,364					2.99
Exercised		(778,245	)				0.62
Forfeited (1)		(3,397,022	)				5.96
Expired		(567,211	)				7.14
Outstanding, December 31, 2022		20,111,246			4.86	$	3.63		320	$	-
Exercisable, December 31, 2022		12,447,071			2.80	$	3.23		320	N/A
Nonvested, December 31, 2022		7,664,172			8.21	$	4.28	$	-	N/A

(1) For stock options forfeited, represent one share for each stock option forfeited.

The total pre-tax intrinsic value (the difference between the market price of the Company’s common stock on the exercise date and the price paid by the options to exercise the option) related to stock options exercised is presented below:

	For the years ended
		December 31, 2022		December 31, 2021		December 31, 2020
Exercised		$	1,355	$	6,667	$	10,123

Summary of Weighted-average Assumptions used to Estimate Fair Value of Various Stock Options

The fair value of the replacement options are estimated using the Black-Scholes Option Pricing Model with the following assumptions:

	March 10, 2022
Volatility	55.0%-80.0%
Risk-free interest rate	1.22%-1.94%
Expected life (years)	1.00-5.00
Dividend yield		0	%

The fair value of the various stock options granted were estimated using the Black-Scholes option pricing model with the following weighted average assumptions:

	December 31, 2022			December 31, 2021			December 31, 2020
Volatility	77.55% - 77.89%			79.05% - 81.51%			82.29% - 87.09%
Risk-free interest rate	1.63% - 3.51%			0.90% - 1.72%			0.35% - 1.60%
Expected life (years)	9.62 - 10.01			4.57 - 10.05			4.76 - 4.95
Dividend yield		0.00	%		0.00	%		0.00	%
Forfeiture rate		26.11	%	23.21%-27.73%				23.21	%

Summary of Activities for Unvested RSUs

The following table summarizes the activities for the RSUs:

	Number of RSUs			Number of RSUs vested		Weighted average remaining contractual life (in years)
Outstanding, December 31, 2019		—			—	N/A
Granted		280,099
Vested		(157,788	)
Outstanding, December 31, 2020		122,311			33,733	N/A
Granted		174,408
Vested		(40,665	)
Forfeited		(63,883	)
Outstanding, December 31, 2021		192,171			13,294	N/A
Granted		1,176,397
Vested		(669,478	)
Forfeited		(283,450	)
Outstanding, December 31, 2022		415,640			13,050	N/A