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Energy Assets, Net - Additional Information (Details) $ in Thousands | 1 Months Ended | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Aug. 31, 2021 USD ($) project | Sep. 30, 2021 USD ($) | Sep. 30, 2020 USD ($) | Sep. 30, 2021 USD ($) | Sep. 30, 2020 USD ($) | Dec. 31, 2020 USD ($)
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] |  |  |  |  |  |
Energy asset impairment charges |  | $ 1,901 |  | $ 1,901 |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Cost of revenues |  | 11,313 | $ 9,547 | 31,449 | $ 28,496 |
Capitalized interest |  | 827 | 1,096 | 4,353 | 2,870 |
ARO assets, net |  | 1,971 |  | 1,971 |  | $ 1,468
ARO liabilities, current |  | 6 |  | 6 |  | 86
ARO liabilities, non-current |  | 2,313 |  | 2,313 |  | 1,561
Total ARO liabilities |  | 2,319 |  | 2,319 |  | $ 1,647
Depreciation expense of ARO assets |  |  |  | 2,397 | 2,492 |
Accretion expense of ARO liabilities |  | 33 | 21 | 90 | 64 |
Energy Project |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Number of projects acquired | project | 1 |  |  |  |  |
Asset acquisition, total purchase price | $ 3,461 |  |  |  |  |
ARO Asset |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Depreciation expense of ARO assets |  | $ 30 | $ 20 | $ 83 | $ 58 |

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