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Net Income (Loss) Per Common Share
 9 Months Ended
Sep. 30, 2024
Earnings Per Share [Abstract]  
Net Income (Loss) Per Common Share Net Loss Per Common Share
The following table summarizes the computation of basic and diluted net loss per common share.
 Three Months Ended
September 30,		Nine Months Ended
September 30,
 2024202320242023
Numerator:
Net loss$(2,557)$(5,057)$(17,297)$(29,609)
Adjustment for preferred stock cumulative dividends and deemed dividends(3,977)(3,347)(11,490)(9,594)
Numerator for basic and diluted net loss per common share$(6,534)$(8,404)$(28,787)$(39,203)
Denominator:
Weighted average common shares outstanding50,000 47,186 49,478 45,793 
Adjustment for participating securities(2,464)(3,496)(2,845)(2,365)
Adjustment for warrants outstanding (1)1,461 3,849 1,889 2,982 
Shares used to calculate basic and diluted net loss per share48,997 47,539 48,522 46,410 
Basic and diluted net loss per common share$(0.13)$(0.18)$(0.59)$(0.84)
Cash dividends declared per common share$— $— $— $— 
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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 15).
The following table presents securities that could be potentially dilutive in the future that were excluded from the calculation of diluted net loss per common share because they had an anti-dilutive effect.
Three Months Ended
September 30,		Nine Months Ended
September 30,
2024202320242023
Stock Options205 315 223 407 
Warrants1,500 1,500 1,500 1,500 
Performance share units820 250 795 89 
Total antidilutive securities2,525 2,065 2,518 1,996 
Stock options excluded from the calculations of diluted net loss per share have a per share exercise price ranging from $7.93 to $25.16 for the three and nine months ended September 30, 2024. Warrants excluded from the calculation of diluted net loss per share have a per share exercise price of $11.03 (see Note 15). Performance share units are potentially dilutive when the related performance criterion has been met.