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BUSINESS ACQUISITIONS - Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Sep. 30, 2019 | Sep. 10, 2019
--- | --- | --- | ---
Business Acquisition [Line Items] |  |  |
Current asset and liabilities | $ 1,015 |  |
Property and equipment | 35 |  |
Operating lease right-of-use assets | 453 |  |
Goodwill | 1,749 |  |
Intangible assets | 4,000 |  |
Total assets acquired | 7,252 |  |
Operating lease liability | 453 |  |
Total liabilities assumed | 453 |  |
Total fair value of net assets acquired | 6,799 |  |
Versatile Power, Inc. [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Total fair value of net assets acquired | 6,799 |  |
Artesyn's Embedded Power Business [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Intangible assets |  |  | $ 124,000
Total fair value of net assets acquired |  | $ 370,236 |
Artesyn's Embedded Power Business [Member] | Preliminary Fair Value [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Accounts and other receivable, net | 132,466 |  |
Inventories | 156,407 |  |
Property and equipment | 63,321 |  |
Operating lease right-of-use assets | 54,439 |  |
Goodwill | 114,998 |  |
Intangible assets | 124,000 |  |
Other assets | 63,214 |  |
Total assets acquired | 708,845 |  |
Accounts payable | 152,635 |  |
Operating lease liability | 54,515 |  |
Pension liability | 48,315 |  |
Deferred income tax liabilities | 1,695 |  |
Other liabilities | 81,449 |  |
Total liabilities assumed | 338,609 |  |
Total fair value of net assets acquired | $ 370,236 |  |

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