XML 86 R71.htm IDEA: XBRL DOCUMENT v3.24.1
STOCK-BASED COMPENSATION, Stock Options (Details) - USD ($)
12 Months Ended
Mar. 02, 2022
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Oct. 03, 2023
Fair Value of Stock Option Assumptions [Abstract]          
Fair value of company common stock (in dollars per share)         $ 2.15
Shares Underlying Options [Roll Forward]          
Options granted (in shares) 366,166 281,494      
Weighted Average Remaining Contractual Term (in years) [Abstract]          
Options to purchase shares of common stock (in shares) 366,166 281,494      
Stock Options [Member]          
Fair Value of Stock Option Assumptions [Abstract]          
Dividend yield   0.00% 0.00%    
Expected volatility, minimum   74.00% 83.00%    
Expected volatility, maximum   188.00% 188.00%    
Risk Free interest rate, minimum   0.27% 0.27%    
Risk Free interest rate, maximum   4.67% 4.52%    
Shares Underlying Options [Roll Forward]          
Outstanding at beginning of period (in shares)   3,983,808 4,046,973    
Options assumed in Helix Merger (in shares)   455,089      
Options granted (in shares)   1,416,000 1,203,250    
Options exercised (in shares)   (2,452) (33,334)    
Options forfeited and expired (in shares)   (1,556,812) (1,233,081)    
Outstanding at end of period (in shares)   3,840,544 3,983,808 4,046,973  
Vested options outstanding (in shares)   1,500,629      
Weighted Average Exercise Price [Abstract]          
Weighted average exercise price, options outstanding (in dollars per share)   $ 10.53 $ 14.25    
Weighted average exercise price, options granted (in dollars per share)   3.46 4.02    
Weighted average exercise price, options exercises (in dollars per share)   2.2 2.47    
Weighted average exercise price, options forfeited and expired (in dollars per share)   12.53 13.87    
Weighted average exercise price, options outstanding (in dollars per share)   7.12 $ 10.53 $ 14.25  
Weighted average exercise price, Vested options outstanding (in dollars per share)   $ 12.98      
Weighted Average Remaining Contractual Term (in years) [Abstract]          
Weighted average remaining contractual term, options outstanding   8 years 11 months 15 days 8 years 2 months 23 days 8 years 9 months  
Weighted average remaining contractual term, options granted   9 years 3 months 10 days 9 years 1 month 20 days    
Weighted average remaining contractual term, options exercised   4 years 5 months 1 day 2 years 6 months 18 days    
Weighted average remaining contractual term, options forfeited and expired   7 years 4 months 24 days 8 years 1 month 13 days    
Weighted average remaining contractual term, vested options outstanding   6 years 1 month 9 days      
Options to purchase shares of common stock (in shares)   1,416,000 1,203,250    
Aggregate intrinsic value of exercisable options   $ 34,299      
Stock Options [Member] | Minimum [Member]          
Fair Value of Stock Option Assumptions [Abstract]          
Exercise price (in dollars per share)   $ 2 $ 2    
Fair value of company common stock (in dollars per share)   $ 2.4 $ 2.98    
Expected life (years) remaining   3 days 3 days    
Stock Options [Member] | Maximum [Member]          
Fair Value of Stock Option Assumptions [Abstract]          
Exercise price (in dollars per share)   $ 51.8 $ 51.8    
Fair value of company common stock (in dollars per share)   $ 15.61 $ 15.61    
Expected life (years) remaining   9 years 11 months 26 days 9 years 7 months 13 days