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Private Placement (FY) (Details) - USD ($) | 1 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Dec. 31, 2020 | Sep. 30, 2021 | Mar. 01, 2021 | Feb. 22, 2021
Private Placement Warrants [Abstract] |  |  |  |
Gross proceeds from issuance of warrants |  | $ 11,960,000 |  |
Class A Ordinary Shares [Member] |  |  |  |
Private Placement Warrants [Abstract] |  |  |  |
Number of securities called by each warrant (in shares) |  |  | 1 | 1
Private Placement Warrant [Member] |  |  |  |
Private Placement Warrants [Abstract] |  |  |  |
Warrants issued (in shares) | 4,666,667 |  |  |
Share price (in dollars per share) | $ 1.50 |  |  |
Gross proceeds from issuance of warrants | $ 7,000,000 |  |  |
Private Placement Warrant [Member] | Class A Ordinary Shares [Member] |  |  |  |
Private Placement Warrants [Abstract] |  |  |  |
Number of securities called by each warrant (in shares) | 1 |  |  |
Warrants exercise price (in dollars per share) | $ 11.50 |  |  |
Over-Allotment Option [Member] | Private Placement Warrant [Member] |  |  |  |
Private Placement Warrants [Abstract] |  |  |  |
Warrants issued (in shares) | 5,166,667 |  |  |
Share price (in dollars per share) | $ 1.50 |  |  |
Gross proceeds from issuance of warrants | $ 7,750,000 |  |  |

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