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Discontinued Operations - Summary of Financial Results for MBP Titan (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Income (loss) from discontinued operations | $ 60 | $ (1,972) | $ 4,599 | $ (64,769)
Impairment of goodwill |  |  | 0 | 9,635
MBP Titan | Discontinued Operations, Disposed of by Means Other than Sale, Abandonment |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Operating (gains) expenses | (60) | 1,972 | (4,599) | 38,713
Operating income (loss) | 60 | (1,972) | 4,599 | (38,713)
Income (loss) before income taxes | 60 | (1,972) | 4,599 | (38,713)
Income (loss) from discontinued operations | $ 60 | $ (1,972) | 4,599 | (38,713)
Impairment of goodwill |  |  | $ 0 | 9,635
Impairment of other noncurrent assets |  |  |  | $ 12,406

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