The number of securities into which each unit may be converted. For example, but not limited to, each unit may be converted into two shares of common stock.

No definition available.

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- References

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- Definition

Value of input used to measure outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258

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- Definition

Period between issuance and expiration of outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258

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FAIR VALUE MEASUREMENTS, Key Inputs into Modified Black-Scholes Model for Private Placement Warrants (Q3) (Details)	Sep. 30, 2021 shares	Dec. 31, 2020	Sep. 22, 2020 shares
Key Inputs into Modified Black-Scholes Model for Private Placement Warrants [Abstract]
Measurement input	5 years	5 days
Common Stock Price [Member]
Key Inputs into Modified Black-Scholes Model for Private Placement Warrants [Abstract]
Measurement input	9.79
Expected Term [Member]
Key Inputs into Modified Black-Scholes Model for Private Placement Warrants [Abstract]
Measurement input	5 years 6 months
Estimated Probability of Successful Business Combination [Member]
Key Inputs into Modified Black-Scholes Model for Private Placement Warrants [Abstract]
Measurement input	0.9000
Exercise Price [Member]
Key Inputs into Modified Black-Scholes Model for Private Placement Warrants [Abstract]
Measurement input	11.50
Risk-free Rate of Interest [Member]
Key Inputs into Modified Black-Scholes Model for Private Placement Warrants [Abstract]
Measurement input	0.0115
Class A Common Stock [Member]
Key Inputs into Modified Black-Scholes Model for Private Placement Warrants [Abstract]
Number of securities to be called by each unit (in shares)	1		1
Public Warrants [Member]
Key Inputs into Modified Black-Scholes Model for Private Placement Warrants [Abstract]
Number of securities to be called by each unit (in shares)	0.5
Private Placement Warrants [Member] \| Expected Volatility [Member]
Key Inputs into Modified Black-Scholes Model for Private Placement Warrants [Abstract]
Measurement input	0.1514