Share-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2022

Share-Based Payment Arrangement [Abstract]

Schedule of Compensation Expense for Share-Based Compensation Arrangements

Compensation expense included in the Company’s consolidated statements of loss for all share-based compensation arrangements was as follows for the periods ended December 31, 2022 and 2021, respectively:

Share-based Compensation Expense:	2022		2021
Research and development	$	169	$	758
Selling, general and administrative	6,844		8,114
Total share-based compensation expense	$	7,013	$	8,872

Schedule of Weighted-Average Assumptions

The weighted-average assumptions under the Black-Scholes option-pricing model for stock option grants as of December 31, 2022 and 2021 are as follows:   

Stock Option Assumptions:	2022		2021
Stock option grants:
Expected term (years)	6.09		6.20
Expected volatility	93.41	%	73.91	%
Risk-free interest rate	2.73	%	1.10	%
Expected dividend yield	—		—

Summary of Stock Option Activity

A summary of the combined stock option activity and other data for the Company’s stock option plans for the year ended December 31, 2022 is as follows:   

Stock Option Activity and Other Data:	Number of Stock Options	Weighted Average Exercise Price per Share		Weighted Average Remaining Contractual Life	Aggregate Intrinsic Value
Stock options outstanding, January 1, 2022	8,403	$	7.39
Granted	3,268	5.29
Exercised	(450)	5.46
Forfeited	(1,496)	7.24
Expired	(421)	9.65
Stock options outstanding, December 31, 2022	9,304	$	6.67	7.78 years	$	8,710
Stock options exercisable, December 31, 2022	4,059	$	7.40	6.33 years	$	6,859

Summary of Restricted Share Awards and Performance Share Unit Awards

A summary of the Company’s restricted share awards as of December 31, 2022, and changes during the year then ended, is reflected in the table below. 

Restricted Share Activity and Other Data:	Number of Restricted Share Awards	Weighted Average Grant Date Fair Value
Non-vested restricted share awards outstanding, January 1, 2022	274	$	7.14
Granted	—	—
Vested	(144)	6.37
Forfeited	(74)	8.04
Non-vested restricted share awards outstanding, December 31, 2022	56	$	7.95

A summary of the Company’s performance share units awards as of December 31, 2022, and changes during the year then ended, is reflected in the table below.

Performance Unit Share Activity and Other Data	Number of Performance Share Awards	Weighted Average Grant Date Fair Value
Non-vested performance share awards outstanding, January 1, 2022	535	$	7.71
Granted	—	—
Vested	—	—
Forfeited	(535)	7.71
Non-vested performance share awards outstanding, December 31, 2022	—	$	—