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Fair Value (Tables)
12 Months Ended
Dec. 31, 2022
Fair Value Disclosures [Abstract]  
Schedule of financial assets and liabilities measured at fair value
  Level 1  Level 2  Level 3  Total 
  (in thousands) 
December 31, 2022            
Cash and Cash Equivalents - Money Market Funds
$95

$

$

$95
Cash and Cash Equivalents - U.S. Government Agency Bonds




36,509





36,509
Short term investments - U.S. Government Agency Bonds





8,216





8,216
Warrants       
4,200  
4,200 
                 
December 31, 2021                
Warrants     $28,875  $28,875 
Schedule of fair value warrants estimated using the Black-Scholes option-pricing model
  December 31, 2022  December 31, 2021 
  Values  Values 
Stock Price $2.93  $8.76 
Strike price $11.50  $11.50 
Holding Period/Term (years)  3.82   4.80 
Volatility  62.00%  52.90%
Expected dividends  None   None 
Risk-Free Rate  4.13%  1.23%
Fair value of warrants $0.48  $3.30 
Schedule of liabilities measured at fair value
Warrants: (in thousands) 
Balance as of January 1, 2022 $28,875 
Fair value adjustment of Private Placement Warrants  (24,675)
Balance as of December 31, 2022 $4,200