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Share-Based Compensation (Tables)
 3 Months Ended
Mar. 31, 2025
Share-Based Payment Arrangement [Abstract]  
Share-based Compensation Expense
The Company recognized share-based compensation in its Condensed Statements of Operations and Comprehensive Loss during the three month periods ended March 31, 2025 and 2024 as follows:
 Three Months Ended
March 31,
 20252024
Manufacture and supply$100 $70 
Research and development330 170 
Selling, general and administrative1,157 1,340 
Total share-based compensation expenses$1,587 $1,580 
Share-based compensation from:
Restricted stock units$1,102 $933 
Stock options485 647 
Total share-based compensation expenses$1,587 $1,580 
Restricted Stock Units Awards
The following tables provide information about the Company’s restricted stock unit and stock option activity during the three month period ended March 31, 2025:
Restricted Stock Units
The following tables summarize the Company’s awards of service-based and market conditions vesting-based restricted stock units for the three month period ended March 31, 2025:
Restricted Stock Unit Awards (RSUs) - Service-based:Number of
Units		Weighted
Average
Grant Date Fair
Value
 (in thousands) 
Unvested as of December 31, 20242,610 $3.38 
Granted1,435 $2.65 
Vested(713)$3.07 
Forfeited(31)$3.99 
Unvested as of March 31, 20253,301 $3.13 
Expected to vest as of March 31, 2025
3,030 $3.11 
Performance Share Activity
Restricted Stock Unit Awards (RSUs) - Market conditions vesting-based:Number of
Units		Weighted
Average
Grant Date Fair
Value
 (in thousands) 
Unvested as of December 31, 20241,082 $2.40 
Granted784 2.82 
Vested— — 
Forfeited— — 
Unvested as of March 31, 20251,866 $2.57 
Expected to vest as of March 31, 2025
1,698 $2.56 
Schedule of Valuation Assumptions
The Company’s estimates of the fair value of the 2025 market conditions vesting-based awards at their grant or valuation dates were based on a Monte Carlo simulation and considered various variables and the following assumptions:
 
Three Months Ended March 31, 2025
Expected dividend yield0%
Expected volatility91.5%
Risk-free interest rate3.9%
Stock price at grant date
$2.65
Stock Option Activity
Stock Option Awards:Number of
Options		Weighted Average
Exercise Price
 (in thousands)
Outstanding as of December 31, 20246,301 $5.68 
Granted738 2.65 
Exercised— — 
Forfeited/Expired(62)5.56 
Outstanding as of March 31, 20256,977 $5.36 
Expected to vest as of March 31, 2025
6,849 $5.40 
Exercisable as of March 31, 20255,238 $6.04 
The fair values of stock options granted were estimated using the Black-Scholes pricing model based on the following assumptions:
Three Months Ended March 31, 2025
Expected dividend yield—%
Expected volatility100%
Expected term (years)6.1
Risk-free interest rate4.2%