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Noncontrolling Interests - Additional Information (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Noncontrolling Interest [Line Items] |  |  |
Capital contributions to joint venture | $ 0 |  |
Net income (loss) attributable to noncontrolling interest | 0 | $ (1,476,000) | $ 207,000
Huen Electric Inc |  |  |
Noncontrolling Interest [Line Items] |  |  |
Distributions to partners | $ 0 |  |

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