Stock-based Compensation	6 Months Ended
Jun. 30, 2023
Share-Based Payment Arrangement [Abstract]
Stock-based Compensation	15. Stock-based Compensation On May 28, 2020, the Company adopted the 2020 Incentive Award Plan (“the 2020 Plan”), which authorized the issuance of (i) up to 3,019,108 shares of the Company’s common stock, (ii) an annual increase on the first day of each year beginning on January 1, 2022 and ending on January 1, 2030 of up to 4% of the shares of common stock outstanding on an as-converted basis on the last day of the immediately preceding fiscal year, and (iii) any shares of the Company’s common stock subject to awards under the 2014 Plan which are forfeited or lapse unexercised and which following the effective date are not issued under the 2014 Plan. Awards may be issued in the form of restricted stock units, restricted stock, stock appreciation rights, and stock options. As of June 30, 2023, the Company has registered an additional 11,011,780 shares of the Company's common stock to be issued pursuant to the 2020 Plan. As of June 30, 2023, there were 1,212,450 shares available for future issuance under the 2020 Plan. On May 20, 2022, the Company adopted the 2022 Inducement Award Plan (the “Inducement Award Plan”). Awards under the Inducement Award Plan may only be granted to a newly hired employee who has not previously been an employee or a member of the Board or an employee who is being rehired following a bona fide period of non-employment by the Company, in each case as a material inducement to the employee’s entering into employment. An aggregate of 3,000,000 shares of the Company’s common stock are reserved for issuance under the Inducement Award Plan. As of June 30, 2023, there were 2,542,963 shares available for future issuance under the Inducement Award Plan. RSUs The Company recognized $2.1 million and $1.4 million of stock-based compensation expense related to RSUs for the three months ended June 30, 2023 and 2022, respectively, and $3.9 million and $4.6 million for the six months ended June 30, 2023 and 2022, respectively. As of June 30, 2023 and December 31, 2022, the Company had $17.7 million and $18.2 million, respectively, of unrecognized stock-based compensation expense that is expected to be recognized over a weighted-average period of 1.9 and 1.9 years, respectively. On May 9, 2022, 1,200,000 RSUs having a grant date fair value of $1.08 per share were granted to the CEO and on May, 20, 2022, an aggregate of 3,190,000 RSUs having a grant date fair value of $1.45 per share were granted to certain members of the management team. On July 25, 2022, 140,000 RSUs having a grant date fair value of $1.64 per share were granted to a member of the management team. The RSUs were issued under the 2020 Plan and will vest on the third anniversary of the grant date, subject to continued employment through that date. The vesting of the RSUs will accelerate in one-third increments if the Company's common stock achieves a closing price at or above $7.50 per share for twenty consecutive trading days during the three-year vesting period; a closing price at or above $15.00 per share for twenty consecutive trading days in the second or third years of the vesting period; and a closing price at or above $21.00 per share for twenty consecutive trading days during the third year of the vesting period. As of June 30, 2023, the accelerated vesting conditions were not met. Certain of the Company’s RSU grants are subject to acceleration upon a change of control and termination within 12 months, and upon death, disability, retirement and certain “good leaver” circumstances.

Stock-based Compensation

6 Months Ended

Jun. 30, 2023

Share-Based Payment Arrangement [Abstract]

15. Stock-based Compensation

On May 28, 2020, the Company adopted the 2020 Incentive Award Plan (“the 2020 Plan”), which authorized the issuance of (i) up to 3,019,108 shares of the Company’s common stock, (ii) an annual increase on the first day of each year beginning on January 1, 2022 and ending on January 1, 2030 of up to 4% of the shares of common stock outstanding on an as-converted basis on the last day of the immediately preceding fiscal year, and (iii) any shares of the Company’s common stock subject to awards under the 2014 Plan which are forfeited or lapse unexercised and which following the effective date are not issued under the 2014 Plan. Awards may be issued in the form of restricted stock units, restricted stock, stock appreciation rights, and stock options. As of June 30, 2023, the Company has registered an additional 11,011,780 shares of the Company's common stock to be issued pursuant to the 2020 Plan. As of June 30, 2023, there were 1,212,450 shares available for future issuance under the 2020 Plan.

On May 20, 2022, the Company adopted the 2022 Inducement Award Plan (the “Inducement Award Plan”). Awards under the Inducement Award Plan may only be granted to a newly hired employee who has not previously been an employee or a member of the Board or an employee who is being rehired following a bona fide period of non-employment by the Company, in each case as a material inducement to the employee’s entering into employment. An aggregate of 3,000,000 shares of the Company’s common stock are reserved for issuance under the Inducement Award Plan. As of June 30, 2023, there were 2,542,963 shares available for future issuance under the Inducement Award Plan.

RSUs

The Company recognized $2.1 million and $1.4 million of stock-based compensation expense related to RSUs for the three months ended June 30, 2023 and 2022, respectively, and $3.9 million and $4.6 million for the six months ended June 30, 2023 and 2022, respectively. As of June 30, 2023 and December 31, 2022, the Company had $17.7 million and $18.2 million, respectively, of unrecognized stock-based compensation expense that is expected to be recognized over a weighted-average period of 1.9 and 1.9 years, respectively.

On May 9, 2022, 1,200,000 RSUs having a grant date fair value of $1.08 per share were granted to the CEO and on May, 20, 2022, an aggregate of 3,190,000 RSUs having a grant date fair value of $1.45 per share were granted to certain members of the management team. On July 25, 2022, 140,000 RSUs having a grant date fair value of $1.64 per share were granted to a member of the management team. The RSUs were issued under the 2020 Plan and will vest on the third anniversary of the grant date, subject to continued employment through that date. The vesting of the RSUs will accelerate in one-third increments if the Company's common stock achieves a closing price at or above $7.50 per share for twenty consecutive trading days during the three-year vesting period; a closing price at or above $15.00 per share for twenty consecutive trading days in the second or third years of the vesting period; and a closing price at or above $21.00 per share for twenty consecutive trading days during the third year of the vesting period. As of June 30, 2023, the accelerated vesting conditions were not met.

Certain of the Company’s RSU grants are subject to acceleration upon a change of control and termination within 12 months, and upon death, disability, retirement and certain “good leaver” circumstances.