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Warrants (Q3) (Details) - $ / shares | 1 Months Ended | 9 Months Ended
--- | --- | ---
Dec. 31, 2020 | Sep. 30, 2021
Warrants (Details) [Line Items] |  |
Warrant expiration term | 5 years | 5 years
Sale price (in dollars per share) |  | $ 10.00
Class A Ordinary Shares [Member] | Additional Issue of Common Stock or Equity [Member] |  |
Warrants (Details) [Line Items] |  |
Number of trading days | 20 days | 20 days
Percentage of exercise price of public warrants is adjusted higher than the market value of newly issued price | 115.00% | 115.00%
Percentage of redemption triggered price is adjusted higher than the market value of newly issued price | 180.00% |
Class A Ordinary Shares [Member] | Additional Issue of Common Stock or Equity [Member] | Minimum [Member] |  |
Warrants (Details) [Line Items] |  |
Sale price (in dollars per share) | $ 9.20 | $ 9.20
Percentage of redemption triggered price is adjusted higher than the market value of newly issued price |  | 100.00%
Class A Ordinary Shares [Member] | Additional Issue of Common Stock or Equity [Member] | Maximum [Member] |  |
Warrants (Details) [Line Items] |  |
Percentage of aggregate gross proceeds of issuance available for funding of business combination | 60.00% | 60.00%
Percentage of redemption triggered price is adjusted higher than the market value of newly issued price |  | 180.00%
Redemption of Warrants When Price Exceeds $18.00 [Member] | Class A Ordinary Shares [Member] |  |
Warrants (Details) [Line Items] |  |
Warrant redemption price (in dollars per unit) | $ 0.01 | $ 0.01
Minimum days required to redeem the warrants | 30 days | 30 days
Number of trading days | 30 days | 30 days
Number of consecutive trading days | 20 days | 20 days
Redemption of Warrants When Price Exceeds $18.00 [Member] | Class A Ordinary Shares [Member] | Minimum [Member] |  |
Warrants (Details) [Line Items] |  |
Sale price (in dollars per share) | $ 18.00 | $ 18.00
Redemption of Warrants When Price Exceeds $10.00 [Member] | Class A Ordinary Shares [Member] |  |
Warrants (Details) [Line Items] |  |
Warrant redemption price (in dollars per unit) | $ 0.10 | $ 0.10
Minimum days required to redeem the warrants | 30 days | 30 days
Redemption of Warrants When Price Exceeds $10.00 [Member] | Class A Ordinary Shares [Member] | Minimum [Member] |  |
Warrants (Details) [Line Items] |  |
Sale price (in dollars per share) | $ 10.00 | $ 10.00
Redemption of Warrants When Price Exceeds $10.00 [Member] | Class A Ordinary Shares [Member] | Private Placement Warrants [Member] | Minimum [Member] |  |
Warrants (Details) [Line Items] |  |
Sale price (in dollars per share) | $ 18.00 | $ 18.00

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- Definition Redemption price per share or per unit of warrants or rights outstanding. + References No definition available. + Details
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- Definition Period to provide written notice to redeem warrants, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Number of trading days for common stock price to exceed threshold, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Percentage of the aggregate gross proceeds from such issuances represent the total equity proceeds, and interest thereon, available for the funding of a Business Combination on the date of the completion of a Business Combination (net of redemptions). + References No definition available. + Details
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- Definition Percentage of the exercise price of the public warrants will be adjusted (to the nearest cent) to be equal to or higher of the market value and the newly issued price. + References No definition available. + Details
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- Definition Threshold period of specified trading days that common stock price exceeds threshold price per share, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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