XML 97 R44.htm IDEA: XBRL DOCUMENT v3.21.4
Organization and Nature of Business - Additional Information (Details) - USD ($)
Dec. 30, 2020
Sep. 30, 2021
Dec. 31, 2020
Dec. 31, 2019
Business Acquisition [Line Items]        
Cash   $ 415,839,000 $ 329,063,000 $ 264,479,000
Perella Weinberg Partners (PWP) | Forecast        
Business Acquisition [Line Items]        
Cash $ 10,000,000      
Redemption of ownership interests $ 110,000,000      
Percentage of ownership acquired 50.00%      
FinTech Acquisition Corp IV | Forecast        
Business Acquisition [Line Items]        
Net proceeds reserved for redemption of ownership interest $ 975,000,000      
Payments to acquire businesses 230,000,000      
Business combination, consideration transferred, equity interests issued and issuable $ 125,000,000      
FinTech Acquisition Corp IV | Private Placement | Forecast        
Business Acquisition [Line Items]        
Share price (in Dollars per Share) $ 10.00