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DISCONTINUED OPERATIONS (Tables) | 12 Months Ended
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Dec. 31, 2020
Discontinued Operations and Disposal Groups [Abstract] |
Schedule of discontinued operations | The following table presents the discontinued operations of the liquid-filled and dry-type transformer manufacturing businesses in the Consolidated Statement of Operations:
|  | Year Ended December 31, |
|  | 2020 |  |  | 2019 |
Revenues |  | $ | — |  |  | $ | 46,631 |
Costs and expenses |  |  |  |  |  |  |  |
Cost of goods sold |  |  | — |  |  |  | 39,915 |
Selling, general and administrative |  |  | — |  |  |  | 9,207 |
Foreign exchange gain |  |  | — |  |  |  | (834 | )
Interest expense |  |  | — |  |  |  | 653 |
Other expense |  |  | — |  |  |  | 41 |
Total costs and expenses |  |  | — |  |  |  | 48,982 |
Gain on sale of discontinued subsidiaries |  |  | — |  |  |  | 13,686 |
Income before provision for income taxes |  |  | — |  |  |  | 11,335 |
Income tax expense |  |  | — |  |  |  | 330 |
Income from discontinued operations, net of income taxes |  | $ | — |  |  | $ | 11,005 |
Depreciation, capital expenditures, and significant non cash items of the discontinued operations by period were as follows:
|  | Year Ended December 31,
|  | 2020 |  |  | 2019
Depreciation and amortization |  | $ | — |  |  | $ | 756
Capital expenditures |  |  | — |  |  |  | 117
Write-off of receivables |  |  | — |  |  |  | 2,876

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