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v3.21.1

Basic of Presentation and Summary of Significant Accounting Policies - Class A Common Stock Subject to Possible Redemption (Details) - USD ($) | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Mar. 31, 2021 | Mar. 31, 2020 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Class of Stock [Line Items] |  |  |  |  |
Temporary Equity, Shares Outstanding | 175,528,225 |  | 175,437,783 | 191,139,933 | 186,466,181
Shares excluded since their inclusion would be anti-dilutive | 321,086,776 | 297,188,387 | 325,849,346 | 293,772,949 |
Net loss | $ (82,553,000) | $ (17,471,000) | $ (156,124,000) | $ (59,414,000) |
Star Peak Energy Transition Corp [Member] |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Temporary Equity, Shares Outstanding |  |  | 24,275,528 |  |
Investment Income, Net | 35,469 |  | $ 136,707 |  |
Net loss | $ (156,346,958) | (1,100) | $ (112,633,298) | $ (10,406) |
Star Peak Energy Transition Corp [Member] | Class A common stock |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Temporary Equity, Shares Outstanding | 8,640,832 |  | 24,275,528 |  |
Taxes available to be withdrawn from the Trust Account |  |  | $ 137,000 |  |
Star Peak Energy Transition Corp [Member] | Common Class B |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Net loss | $ 156,300,000 | $ 0 | $ 112,600,000 |  |
Star Peak Energy Transition Corp [Member] | Class A shares |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Temporary Equity, Shares Outstanding | 8,640,832 |  | 24,275,528 |  |
Investment Income, Net | $ 35,000 |  | $ 137,000 |  |
Taxes available to be withdrawn from the Trust Account | 35,000 |  |  |  |
Net loss | $ 0 |  |  |  |
Star Peak Energy Transition Corp [Member] | Class A shares |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Shares excluded since their inclusion would be anti-dilutive | 19,967,302 |  | 19,967,302 |  |
Star Peak Energy Transition Corp [Member] | Founder Shares | Sponsor |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Federal depository insurance coverage | $ 250,000 |  | $ 250,000 |  |

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