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Acquisition and Divestitures - Narrative (Details) $ in Thousands |  |  | 1 Months Ended | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | ---
Mar. 01, 2021 USD ($) | Feb. 26, 2020 USD ($) | Jun. 30, 2020 USD ($) | Jun. 30, 2021 USD ($) | Jun. 30, 2020 USD ($) | Jun. 30, 2021 USD ($) | Jun. 30, 2020 USD ($) | Dec. 31, 2020 USD ($) | Jan. 31, 2020 agreement
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Gain (loss) on sale of business |  |  |  | $ 0 | $ (678) | $ 0 | $ (8,214) |  |
Prime Turbines |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Number of sale agreements | agreement |  |  |  |  |  |  |  |  | 2
Proceeds from sale of business |  | $ 20,000 |  |  |  |  |  |  |
Note receivable |  | $ 8,300 |  |  |  |  |  |  |
Gain (loss) on sale of business |  |  |  |  | (7,500) |  |  |  |
PTB |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Note receivable |  |  |  | 5,400 |  | 5,400 |  | $ 6,100 |
Financing receivable, current |  |  |  | 1,500 |  | 1,500 |  | 1,400 |
CT Aerospace |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Proceeds from sale of business |  |  | $ 6,900 |  |  |  |  |  |
Gain (loss) on sale of business |  |  |  |  | $ (678) |  |  |  |
Legacy Turbines |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Financing receivable, current |  |  |  | 1,700 |  | 1,700 |  | 1,300 |
Note receivable, net |  |  |  | 6,100 |  | 6,100 |  | 6,400 |
Variable discount |  |  |  | $ 275 |  | $ 275 |  | $ 275 |
HAECO Special Services, LLC |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Cash consideration | $ 14,800 |  |  |  |  |  |  |  |
Tangible assets, net | 7,500 |  |  |  |  |  |  |  |
Accounts receivable | 9,200 |  |  |  |  |  |  |  |
HAECO Special Services, LLC | Customer Relationships |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Intangible assets | $ 7,300 |  |  |  |  |  |  |  |
Useful life (in years) | 4 years |  |  |  |  |  |  |  |

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- Definition Amount of gain (loss) from sale and disposal of integrated set of activities and assets capable of being conducted and managed for purpose of providing return in form of dividend, lower cost, or other economic benefit to investor, owner, member and participant. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1B -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109239629&loc=SL4582445-111684 + Details
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