Warrant Liability - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands		6 Months Ended	9 Months Ended
	Jun. 09, 2021	Jun. 30, 2021	Sep. 30, 2021	Jun. 10, 2021	Dec. 31, 2020
Class of Warrant or Right [Line Items]
Warrants outstanding (in shares)					0
Warrants outstanding			$ 103,492	$ 74,408	$ 0
Class B
Class of Warrant or Right [Line Items]
Conversion of stock, shares converted (in shares)	8,625,000
Class A
Class of Warrant or Right [Line Items]
Conversion of stock, shares issued (in shares)	8,625,000
Public Warrants
Class of Warrant or Right [Line Items]
Warrants issued (in shares)			17,250,000
Exercise price (in dollars per share)			$ 11.50
Warrant exercise period			30 days
Redemption price of warrants (in dollars per share)			$ 0.01
Redemption period			30 days
Stock price trigger (in dollars per share)			$ 18.00
Trading period			30 days
Redemption period, minimum sale price trading days			20 days
Warrants outstanding			$ 42,435
Public Warrants | Minimum
Class of Warrant or Right [Line Items]
Stock price trigger (in dollars per share)			$ 18.00
Private Placement Warrants
Class of Warrant or Right [Line Items]
Number of securities called by each warrant (in shares)	1
Exercise price (in dollars per share)			$ 11.50
Private Placement Warrants | Thunder Bridge Acquisition II, Ltd
Class of Warrant or Right [Line Items]
Warrants outstanding (in shares)	8,650,000
Number of securities called by each warrant (in shares)	1
Exercise price (in dollars per share)	$ 11.50
Working Capital Warrants
Class of Warrant or Right [Line Items]
Warrants issued upon conversion (in shares)		1,500,000	1,500,000
Original debt amount			$ 1,500