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Related Party Transactions (Details) - USD ($)
2 Months Ended 9 Months Ended 12 Months Ended
Mar. 02, 2021
Dec. 31, 2020
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Dec. 31, 2019
Dec. 21, 2020
Mcap Acquisition Corp [Member]              
Related Party Transaction [Line Items]              
Repayment of promissory note - related party     $ 250,000        
Price of warrant $ 1.50   $ 1.50        
Proceeds from promissory note - related party   $ 100,000 $ 150,000        
Promissory Note with Related Party              
Related Party Transaction [Line Items]              
Maximum borrowing capacity of related party promissory note             $ 300,000
Repayment of promissory note - related party $ 250,000            
Promissory Note with Related Party | Mcap Acquisition Corp [Member]              
Related Party Transaction [Line Items]              
Maximum borrowing capacity of related party promissory note 300,000 300,000     $ 300,000    
Repayment of promissory note - related party 250,000            
Proceeds from promissory note - related party   100,000          
Administrative Support Agreement              
Related Party Transaction [Line Items]              
Expenses per month     10,000        
Administrative Support Agreement | Mcap Acquisition Corp [Member]              
Related Party Transaction [Line Items]              
Expenses per month 10,000 10,000          
Related Party Loans              
Related Party Transaction [Line Items]              
Loan conversion agreement warrant     $ 1,500,000        
Related Party Loans | Working capital loans warrant              
Related Party Transaction [Line Items]              
Price of warrant     $ 1.50        
Related Party Loans | Mcap Acquisition Corp [Member]              
Related Party Transaction [Line Items]              
Loan conversion agreement warrant $ 1,500,000 $ 1,500,000     $ 1,500,000    
Related Party Loans | Mcap Acquisition Corp [Member] | Working capital loans warrant              
Related Party Transaction [Line Items]              
Price of warrant $ 1.50 $ 1.50     $ 1.50    
Transaction And Professional Services Agreement | H.I.G CAPITAL LLC              
Related Party Transaction [Line Items]              
Related Party Transaction, Purchases from Related Party     $ 870,000        
Related party transaction, annual management fee     653,000 $ 654,000 $ 872,000 $ 898,000  
Related party transaction, amount outstanding   $ 0 $ 0   $ 0 $ 0