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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2024
Accounting Policies [Abstract] |
Summary of Impact of Revision to Specific Line Items in Consolidated Balance Sheet, Consolidated Statement of Changes in Equity and Consolidated Statements of Comprehensive Loss | The following tables reflect the impact of the revisions to the specific line items presented in the Company’s previously reported Consolidated Balance Sheet as of December 31, 2023, the Consolidated Statement of Loss and the Consolidated Statement of Comprehensive Loss for the year ended December 31, 2023.
|  |  | December 31, 2023 |
(In thousands) |  |  | As Previously Reported |  |  | Revision |  |  | As Revised |
Accrued Expenses and Other Liabilities |  |  | $ | 37,607 |  |  | $ | (1,403 | ) | (a) | $ | 36,204 |
Total Current Liabilities |  |  | $ | 279,511 |  |  | $ | (1,403 | ) |  | $ | 278,108 |
Total Liabilities |  |  | $ | 636,934 |  |  | $ | (1,403 | ) |  | $ | 635,531 |
Redeemable Non-Controlling Interest |  |  | $ | 451,756 |  |  | $ | (9,604 | ) | (b) | $ | 442,152 |
Accumulated Other Comprehensive Income |  |  | $ | 47,461 |  |  | $ | 4 |  | (a) | $ | 47,465 |
Retained Deficit |  |  | $ | (243,908 | ) |  | $ | 11,003 |  | (a)(b) | $ | (232,905 | )
Total Equity |  |  | $ | 593,822 |  |  | $ | 11,007 |  |  | $ | 604,829 |
Total Liabilities, Redeemable Non-Controlling Interest and Equity |  |  | $ | 1,682,512 |  |  | $ | — |  |  | $ | 1,682,512 |
|  |  | For the Year Ended December 31, 2023 |
(In thousands) |  |  | As Previously Reported |  |  | Revision |  |  | As Revised |
Less: Net Income attributable to non-controlling interest |  |  | $ | 8,345 |  |  | $ | (1,399 | ) | (a) | $ | 6,946 |
Net Loss attributable to ADTRAN Holdings, Inc. |  |  | $ | (267,688 | ) |  | $ | 1,399 |  | (a) | $ | (266,289 | )
Loss per common share attributable to ADTRAN Holdings, Inc. – basic |  |  | $ | (3.41 | ) |  | $ | 0.02 |  | (a) | $ | (3.39 | )
Loss per common share attributable to ADTRAN Holdings, Inc. – diluted |  |  | $ | (3.41 | ) |  | $ | 0.02 |  | (a) | $ | (3.39 | )
Foreign currency translation gain |  |  | $ | 22,753 |  |  | $ | 4 |  | (a) | $ | 22,757 |
Other Comprehensive Income, net of tax |  |  | $ | 21,717 |  |  | $ | 4 |  |  | $ | 21,721 |
Comprehensive Loss, net of tax |  |  | $ | (237,626 | ) |  | $ | 4 |  |  | $ | (237,622 | )
Less: Comprehensive Income attributable to non-controlling interest, net of tax |  |  | $ | 8,727 |  |  | $ | (1,399 | ) | (a) | $ | 7,328 |
Comprehensive Loss attributable to ADTRAN Holdings, Inc., net of tax |  |  | $ | (246,353 | ) |  | $ | 1,403 |  | (a) | $ | (244,950 | )

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- Definition Tabular disclosure of prior period adjustments to previously issued financial statements including (1) the effect of the correction on each financial statement line item and any per-share amounts affected for each prior period presented (2) the cumulative effect of the change on retained earnings or other appropriate components of equity or net assets in the statement of financial position, as of the beginning of the earliest period presented, and (3) the effect of the prior period adjustments (both gross and net of applicable income tax) on the net income of each prior period presented in the entity's annual report for the year in which the adjustments are made. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483443/250-10-50-8 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483443/250-10-50-7 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 9 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483443/250-10-50-9 + Details
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