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Fair Value - Level 3 (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2021 | Mar. 31, 2020 | Dec. 31, 2020 | Dec. 31, 2019
Redeemable convertible preferred stock warrants |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Beginning balance |  | $ 6,684 | $ 6,684 | $ 436
Additions |  |  | 1,762 | 6,651
Settlements |  |  | (11,030) | (2,493)
Change in fair value, loss (gain) included in net loss |  | 1,214 | 2,584 | 2,090
Ending balance |  | 7,898 |  | 6,684
FVO notes |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Beginning balance |  | 11,659 | 11,659 |
Additions |  |  |  | 5,500
Settlements |  |  | (8,698) |
Change in fair value, loss (gain) included in net loss |  | 454 | 895 | 6,159
Change in fair value, (gain) included in other comprehensive income |  | (3,856) |  |
Gain on extinguishment of debt |  |  | (3,856) |
Ending balance |  | 8,257 |  | 11,659
Contingent Consideration |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Beginning balance |  | 100 | 100 | 400
Change in fair value, loss (gain) included in net loss |  |  |  | (300)
Ending balance |  |  |  | 100
Contingent consideration - earnout |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Beginning balance | $ 50,238 |  |  |
Additions |  |  | 50,238 |
Settlements | (25,815) |  |  |
Change in fair value, loss (gain) included in net loss | 18,770 |  |  |
Ending balance | 43,193 |  | 50,238 |
Contingent consideration - business combination |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Beginning balance | 3,549 | 100 | 100 |
Additions | 1,737 |  | 1,749 |
Settlements | (2,062) |  |  |
Change in fair value, loss (gain) included in net loss | (355) | (80) | 1,700 |
Ending balance | 2,869 | $ 20 | 3,549 | $ 100
Private warrant liability |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Beginning balance | 31,534 |  |  |
Change in fair value, loss (gain) included in net loss | 15,910 |  |  |
Ending balance | $ 47,444 |  | $ 31,534 |

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