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LONG-TERM EMPLOYEE-RELATED OBLIGATIONS (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items] |  |  |
Severance payments actually paid | $ 380 | $ 689 | $ 400
Expected deposits to be made in the next fiscal year for severance and pension payment obligations | 800 |  |
2021 | 54 |  |
2022 | 166 |  |
2023 | 240 |  |
2024 | 43 |  |
2025 |  |  |
Thereafter (through 2030) | 906 |  |
Total | 1,409 |  |
TAT and Turbochrome [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Severance pay expenses | 830 | 1,096 | 968
Limco Piedmont Inc [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
401(K) profit sharing plan contributions made by company | $ 156 | $ 367 | $ 368
Percentage of employees contribution matched by employer | 100.00% |  |
Percentage of employees contribution | 2.00% |  |
Percentage of employees contribution matched by employer, two | 50.00% |  |
Percentage of employees contribution, two | 3.00% |  |

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