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RECENT ACCOUNTING PRONOUNCEMENTS (Tables) | 3 Months Ended
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Apr. 01, 2022
Accounting Changes and Error Corrections [Abstract] |
Schedule of Accounting Standards Update and Change in Accounting Principle | The cumulative effect of the ASU adoption was as follows:
|  |  | Adjustments from |  |
| Balance at |  | Adoption of |  | Balance at
(in thousands) | December 31, 2021 |  | ASU 2020-06 |  | January 1, 2022
Liabilities |  |  |  |  |
Convertible debt, current | $ | 36,824 |  |  | $ | 626 |  |  | $ | 37,450 |
Convertible debt, non-current | 98,941 |  |  | 14,167 |  |  | 113,108 |
Mezzanine equity |  |  |  |  |
Convertible debt | 883 |  |  | (883) |  |  | — |
Equity |  |  |  |  |
Additional paid-capital | 2,387,039 |  |  | (32,249) |  |  | 2,354,790 |
Accumulated deficit | (2,087,957) |  |  | 18,339 |  |  | (2,069,618) |

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