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Discontinued Operations - Narrative (Details) $ in Thousands | 1 Months Ended | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
May 31, 2021 USD ($) | Sep. 30, 2021 USD ($) | Sep. 30, 2020 USD ($) | Sep. 30, 2021 USD ($) | Sep. 30, 2020 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Impairment expense - Disc Ops |  |  |  | $ 126,285 | $ 295,239
Level 3 | Customer Relationships | Measurement Input, Weighted Average Long-term Revenue Growth Rate |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Measurement input |  | 0.024 |  | 0.024 |
Level 3 | Customer Relationships | Measurement Input, Weighted Average Cost of Capital |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Measurement input |  | 0.12 |  | 0.12 |
Level 3 | Customer Relationships | Measurement Input, Customer Attrition Factor |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Measurement input |  | 0.10 |  | 0.10 |
Minimum | Level 3 | Customer Relationships | Measurement Input, Long-term Revenue Growth Rate |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Measurement input |  | 0.02 |  | 0.02 |
Maximum | Level 3 | Customer Relationships | Measurement Input, Long-term Revenue Growth Rate |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Measurement input |  | 0.055 |  | 0.055 |
Discontinued Operations |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Loss on sale of AMECO North America |  |  |  | $ (24,864) | 0
Impairment expense - Disc Ops |  | $ 0 | $ 0 |  |
AMECO | Discontinued Operations |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Proceeds from Sales of Business, Affiliate and Productive Assets | $ 71,000 |  |  |  |
Loss on sale of AMECO North America | $ (25,000) |  |  | (24,864) | 0
Impairment expense - Disc Ops |  | 4,809 |  | 53,085 | 100,000
AMECO | Discontinued Operations | Fair value adjustment and expected costs associated with sale |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Impairment expense - Disc Ops |  | $ 4,809 |  | $ 53,085 | $ 87,700

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