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Related Party Transactions, Promissory Note, Related Party Loans and Administrative Support Agreement (FY) (Details) - USD ($)
4 Months Ended 6 Months Ended
Mar. 02, 2021
Jan. 04, 2021
Dec. 31, 2020
Jun. 30, 2021
Related Party Loans [Abstract]        
Expenses paid by sponsor   $ 11,216 $ 11,216 $ 0
Loan proceeds       127,075
Sponsor [Member]        
Related Party Loans [Abstract]        
Expenses paid by sponsor     11,000  
Sponsor [Member] | Promissory Note [Member]        
Related Party Loans [Abstract]        
Related party transaction $ 300,000 300,000    
Loan proceeds $ 161,000 11,000 11,000 161,000
Sponsor [Member] | Administrative Support Agreement [Member]        
Administrative Support Agreement [Abstract]        
Monthly fee   10,000   10,000
Sponsor Affiliate of Sponsor or Certain Company Officers and Directors [Member] | Working Capital Loans [Member]        
Related Party Loans [Abstract]        
Conversion value   $ 1,500,000   $ 1,500,000
Conversion price (in dollars per share)   $ 10.00   $ 10.00
Borrowings outstanding   $ 0 $ 0 $ 0