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Nature of Business - Summary of Impact of Revision to Specific Line Items in Consolidated Statements of Comprehensive Loss (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |
Comprehensive (Loss) Income attributable to non-controlling interest | $ 8,727 | $ 12,818 |
Comprehensive Income attributable to ADTRAN Holdings, Inc., net of tax | $ (246,353) | 36,003 | $ (8,910)
As Reported [Member] |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |
Comprehensive (Loss) Income attributable to non-controlling interest |  | (918) |
Comprehensive Income attributable to ADTRAN Holdings, Inc., net of tax |  | 49,739 |
Adjustment [Member] |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |
Comprehensive (Loss) Income attributable to non-controlling interest |  | 13,736 |
Comprehensive Income attributable to ADTRAN Holdings, Inc., net of tax |  | $ (13,736) |

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