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Acquisitions and Divestitures - Narrative (Details) $ in Thousands |  |  |  | 1 Months Ended | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | ---
Jun. 26, 2020 USD ($) | Feb. 26, 2020 USD ($) | Jan. 10, 2019 USD ($) | Jan. 31, 2020 USD ($) | Jun. 30, 2020 USD ($) | Mar. 31, 2020 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Jan. 28, 2020 agreement
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Imputed interest rate discount |  |  |  |  |  |  | 3.40% |  |  |
Loss on sale of a business entity and certain assets |  |  |  |  |  |  | $ (8,214) | $ 0 | $ 0 |
Prime Turbines |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Number of sale agreements | agreement |  |  |  |  |  |  |  |  |  | 2
Proceeds from sale of business |  | $ 20,000 |  |  |  |  |  |  |  |
Note receivable |  | $ 8,300 |  |  |  |  |  |  |  |
Loss on sale of a business entity and certain assets |  |  |  |  |  | $ (7,500) |  |  |  |
PTB Holdings USA, LLC | Other assets |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Note receivable |  |  |  |  |  |  | 4,700 |  |  |
PTB Holdings USA, LLC | Other current assets |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Note receivable |  |  |  |  |  |  | 1,400 |  |  |
CT Aerospace LLC |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Proceeds from sale of business | $ 6,900 |  |  |  |  |  |  |  |  |
Loss on sale of a business entity and certain assets |  |  |  |  | $ (678) |  |  |  |  |
Legacy Turbines LLC |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Note receivable, net |  |  |  |  |  |  | 5,200 |  |  |
Legacy Turbines LLC | Other assets |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Variable discount |  |  |  |  |  |  | 275 |  |  |
Legacy Turbines LLC | Other current assets |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Variable discount |  |  |  |  |  |  | 1,300 |  |  |
First Choice Aerospace |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Business acquisition, percentage acquired |  |  | 100.00% |  |  |  |  |  |  |
Cash consideration |  |  | $ 113,000 |  |  |  |  |  |  |
Working capital adjustment |  |  | 1,100 |  |  |  |  |  |  |
Earn-out payments |  |  | $ 40,000 |  |  |  |  |  |  |
Consideration payment |  |  |  | $ 31,700 |  |  |  |  |  |
Acquisition-related expenses |  |  |  |  |  |  | $ 408 |  |  |
Employment Contracts |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Term of contract |  |  | 3 years |  |  |  |  |  |  |
Noncompete Agreements |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Term of contract |  |  | 5 years |  |  |  |  |  |  |

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