Fair Value Measurements (Tables)
 12 Months Ended
Dec. 31, 2021
Fair Value Disclosures [Abstract]  
Schedule of fair value hierarchy for assets and liabilities measured at fair value
The following tables present the fair value hierarchy for assets and liabilities measured at fair value as of (in thousands):
 
    
December 31, 2021
  
    
Level 1
     
Level 2
     
Level 3
     
Total Fair
Value
  
Cash equivalents
            
Money market funds
    $ 10,955      $ —        $ —        $ 10,955  
  
 
 
     
 
 
     
 
 
     
 
 
  
Total cash equivalents
    $ 10,955      $ —        $ —        $ 10,955  
  
 
 
     
 
 
     
 
 
     
 
 
  
Liabilities
            
Warrant liabilities
    $ 10,820      $ —        $ —        $ 10,820  
Contingent consideration - other liabilities
      —          —          13,897        13,897  
  
 
 
     
 
 
     
 
 
     
 
 
  
Total liabilities at fair value
    $ 10,820      $ —        $ 13,897      $ 24,717  
  
 
 
     
 
 
     
 
 
     
 
 
  
 
    
December 31, 2020
  
    
Level 1
     
Level 2
     
Level 3
     
Total Fair
Value
  
Cash equivalents
            
Money market funds
    $ 11,793      $ —        $ —        $ 11,793  
  
 
 
     
 
 
     
 
 
     
 
 
  
Total cash equivalents
    $ 11,793      $ —        $ —        $ 11,793  
  
 
 
     
 
 
     
 
 
     
 
 
  
Liabilities
            
Warrant liabilities
    $ —        $ —        $ 4,963      $ 4,963  
Contingent consideration - other liabilities
      —          —          9,271        9,271  
  
 
 
     
 
 
     
 
 
     
 
 
  
Total liabilities at fair value
    $ —        $ —        $ 14,234      $ 14,234  
  
 
 
     
 
 
     
 
 
     
 
 
  
Schedule of changes to the warrant liability and contingent consideration
The following is a schedule of changes to the private placement warrant liabilities balance (Level 3 measurements) during 2021 and 2020 (in thousands):
 
December 31, 2019
    $ 1,526  
Re-measurement
of warrants (other (income) expense)
      3,437  
  
 
 
  
December 31, 2020
      4,963  
Re-measurement
of warrants (other (income) expense)
      (843 ) 
New private placement warrants assumed in connection with the Business Combination
      10,319  
Conversion of warrants to common stock in connection with the Business Combination
      (10,761 ) 
Reclassification to Level 1 measurement upon registration of private placement warrants
      (3,678 ) 
  
 
 
  
December 31, 2021
    $ —    
  
 
 
  
The following is a schedule of changes to the contingent consideration—other liabilities for the periods presented (in thousands):
 
December 31, 2019
    $ 702  
Contingent consideration from acquisitions
      2,358  
Re-measurement
of contingent consideration (other (income) expense)
      6,211  
  
 
 
  
December 31, 2020
      9,271  
Contingent consideration from acquisition
      10,305  
Antidilution provision for Series D Preferred Stock
      6,387  
Settlement of contingent consideration for doc.ai acquisition
      (12,682 ) 
Conversion of Series D Preferred Stock to Series A Preferred Stock
      (6,451 ) 
Contingent consideration in connection with the Business Combination
      21,109  
Settlement of contingent consideration for WhitehatAI earnout
      (595 ) 
Re-measurement
of contingent consideration (other (income) expense)
      (13,447 ) 
  
 
 
  
December 31, 2021
    $ 13,897