Quarterly report pursuant to Section 13 or 15(d)

Business Combination with Fathom OpCo - Additional Information (Details)

v3.22.2.2
Business Combination with Fathom OpCo - Additional Information (Details)
$ / shares in Units, $ in Thousands
6 Months Ended
Dec. 23, 2021
USD ($)
Vote
$ / shares
shares
Jun. 30, 2022
USD ($)
Dec. 31, 2021
USD ($)
Business Acquisition [Line Items]      
Number of votes per share | Vote 1    
Business combination acquisition costs expensed $ 19,010    
Weighted average amortization period   16 years 10 months 24 days  
Fathom OpCo [Member]      
Business Acquisition [Line Items]      
Deferred tax liability recognized     $ 17,573
Fair value of total purchase consideration transferred   $ 1,364,220  
Fathom OpCo [Member] | Class A Common Shares      
Business Acquisition [Line Items]      
Seller earnout contingent consideration   $ 9,000,000  
Earnout shares vested | shares 3,000,000    
Fathom OpCo [Member] | Class A Common Shares | First Tranche [Member]      
Business Acquisition [Line Items]      
Volume weighted average share price thresholds | $ / shares $ 12.50    
Fathom OpCo [Member] | Class A Common Shares | Second Tranche [Member]      
Business Acquisition [Line Items]      
Volume weighted average share price thresholds | $ / shares 15.00    
Fathom OpCo [Member] | Class A Common Shares | Third Tranche [Member]      
Business Acquisition [Line Items]      
Volume weighted average share price thresholds | $ / shares $ 20.00    
Fathom OpCo [Member] | Public investors, PIPE Investors and Founders [Member] | Class A Common Shares      
Business Acquisition [Line Items]      
Business acquisition, percentage of interests acquired 10.40%    
Fathom OpCo [Member] | CORE Investors and Other Legacy Fathom Owners [Member] | Class A Common Shares      
Business Acquisition [Line Items]      
Business acquisition, percentage of interests acquired 89.60%