Earn-Out Liability - Narrative (Details) $ / shares in Units, $ in Thousands	Jun. 10, 2021 USD ($) tradingDay $ / shares shares	Jun. 30, 2021 USD ($) $ / shares	Dec. 31, 2020 $ / shares
Reverse Capitalization [Line Items]
Earn-out liability | $	$ 119,759
Class A
Reverse Capitalization [Line Items]
Common stock, par value (in dollars per share) | $ / shares	$ 0.0001	$ 0.1000	$ 0.1000
Earnout shares
Reverse Capitalization [Line Items]
Earn-out liability (in shares)	10,000,000
Earnout period, threshold trading days (in trading days) | tradingDay	20
Earnout period, threshold consecutive trading days (in trading days) | tradingDay	30
Milestone one, earn out
Reverse Capitalization [Line Items]
Earn-out liability (in shares)	5,000,000
Earn-out liability | $	$ 63,426	$ 54,120
Milestone one, earn out | Minimum
Reverse Capitalization [Line Items]
Earn-out liability, price trigger (in dollars per share) | $ / shares	$ 12.50
Milestone one, earn out | Maximum
Reverse Capitalization [Line Items]
Earn-out liability, price trigger (in dollars per share) | $ / shares	$ 15.00
Milestone two, earn out
Reverse Capitalization [Line Items]
Earn-out liability (in shares)	5,000,000
Earn-out liability | $	$ 56,333	$ 47,701
Escrow shares
Reverse Capitalization [Line Items]
Earn-out liability (in shares)	3,450,000
Milestone one, escrow shares
Reverse Capitalization [Line Items]
Percentage of shares by milestone		0.50
Milestone two, escrow shares
Reverse Capitalization [Line Items]
Percentage of shares by milestone		0.50