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Net Income (Loss) Per Share
 12 Months Ended
Dec. 31, 2024
Earnings Per Share [Abstract]  
Net Income (Loss) Per Share Net Income (Loss) Per Common Share
The following table summarizes the computation of basic and diluted net income (loss) per common share.
 Years Ended December 31,
 202420232022
Numerator:
Net loss$(38,273)$(50,150)$(26,098)
Adjustment for preferred stock cumulative dividends and deemed dividends(15,698)(13,098)(10,894)
Numerator for basic and diluted net loss per common share$(53,971)$(63,248)$(36,992)
Denominator:
Weighted average common shares outstanding49,596 46,174 43,738 
Adjustment for participating securities(2,724)(2,636)(951)
Adjustment for warrants outstanding (1)1,781 3,200 1,893 
Shares used to calculate basic and diluted net loss per share48,653 46,738 44,680 
Basic and diluted net loss per common share$(1.11)$(1.35)$(0.83)
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(1) Outstanding warrants that are exercisable at an exercise price of $0.01 per share, are included in shares outstanding for calculation of basic earnings per share (see Note 17).
The following table presents potentially dilutive securities that were excluded from the calculation of diluted net income (loss) per common share because they had an anti-dilutive effect.
Years Ended December 31,
202420232022
Stock options212 381 557 
Warrants1,500 1,500 1,500 
Performance share units802 133 — 
Total antidilutive securities2,514 2,014 2,057 
Stock options excluded from the EPS calculations had a per share exercise price ranging from $7.93 to $25.16 for the year ended December 31, 2024. The 2019 Warrants excluded from the EPS calculations for the year ended December 31, 2024 had a per share exercise price of $11.03 (see Note 17). Performance share units are potentially dilutive when the related performance criterion has been met.