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CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Parenthetical) - Star Peak Energy Transition Corp [Member] - Common Class B - shares |  | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Aug. 26, 2020 | Dec. 31, 2020 | Mar. 31, 2021 | Jul. 13, 2020 | Dec. 31, 2019
Maximum shares subject to forfeiture |  |  |  | 1,312,500 |
Common stock, shares forfeited (in shares) |  | 472,874 |  |  |
Over-allotment |  |  |  |  |
Maximum shares subject to forfeiture | 472,874 | 1,312,500 | 1,312,500 |  | 1,312,500
Common stock, shares forfeited (in shares) | 472,874 |  |  |  |

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- Definition Represents the maximum number of common stock shares subject to forfeiture. + References No definition available. + Details
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- Details
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- Details
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