| Cover | 12 Months Ended |
| Dec. 31, 2022 | |
| Document Information [Line Items] | |
| Document Type | DEF 14A |
| Amendment Flag | false |
| Entity Information [Line Items] | |
| Entity Registrant Name | ADTRAN Holdings, Inc. |
| Entity Central Index Key | 0000926282 |
| Pay vs Performance Disclosure Unit_pure in Millions | 12 Months Ended | ||
| Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | |
| Pay vs Performance Disclosure [Table] | |||
| Pay vs Performance [Table Text Block] | In accordance with rules adopted by the Securities and Exchange Commission pursuant to the Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010, we provide the following disclosure regarding exec Non-PEO Summary ($) Compensation ($) Average Non-PEO ($) Average Non-PEO Value of Initial Investment based on: (4) Net Income Adjusted ($ Millions) Year TSR Peer 2022 10,467,712 9,153,853 1,110,338 1,053,973 203.51 100.08 (8.9) 52.2 2021 4,515,356 6,565,639 1,155,022 1,381,134 243.02 131.83 (8.6) 11.3 2020 2,898,033 4,106,999 900,561 1,059,643 154.37 124.20 2.4 10.8 (1) The PEO for each year presented was Thomas R. Stanton. The individuals comprising the Non-PEO 2022 2021 2020 Michael K. Foliano Michael K. Foliano Michael K. Foliano James D. Wilson, Jr. James D. Wilson, Jr. James D. Wilson, Jr. Ronald D. Centis Ronald D. Centis Ronald D. Centis Raymond Harris Raymond Harris Eduard Scheiterer Christoph Glingener As discussed in Compensation Discussion & Analysis, Mr. Glingener became an NEO in July 2022 in connection with the Business Combination. Compensation amounts reflected in this Pay Versus Performance Disclosure for Mr. Glingener reflect only the period from July 15, 2022 through December 31, 2022. (2) The amounts shown for Compensation Actually Paid have been calculated in accordance with Item 402(v) of Regulation S-K (3) Compensation Actually Paid reflects the exclusions and inclusions of certain amounts for the PEO and the Non-PEO Year Summary Compensation Thomas R. Stanton Exclusion of Stock Thomas R. Stanton Inclusion of Equity Thomas R. Stanton Compensation 2022 10,467,712 (8,632,599) 7,318,740 9,153,853 2021 4,515,356 (2,503,918) 4,554,201 6,565,639 2020 2,898,033 (1,846,036) 3,055,002 4,106,999 Year Average Summary Non-PEO Average Exclusion of Non-PEO Average Inclusion Non-PEO Average Non-PEO NEOs 2022 1,110,338 (567,713) 511,348 1,053,973 2021 1,155,022 (596,692) 822,804 1,381,134 2020 900,561 (419,856) 578,938 1,059,643 The amounts in the Inclusion of Equity Values in the tables above are derived from the amounts set forth in the following tables: Year Year-End Fair Value of Equity Awards Granted During Year That Remained Unvested as of Last Day of Year for Thomas R. Stanton Change in Fair Value from Last Day of Prior Year Year of Unvested Equity Awards for Thomas R. Stanton Vesting-Date Fair Value of Equity Awards Granted During Year that Vested During Year for Thomas R. Stanton Change in Fair Value During Year for Thomas R. Stanton Total -Inclusion of 2022 5,844,855 (1,132,391) 1,158,854 1,447,422 7,318,740 2021 1,507,454 2,288,391 — 758,356 4,554,201 2020 1,578,027 1,271,442 — 205,533 3,055,002 Year Average Year-End Fair Value of Equity Awards Granted During Year That Remained Unvested as of Last Day of Year for Non-PEO Average Change in Fair Value from Last Day of Prior Year to Last Day of Year of Unvested Equity Awards for Non-PEO Average Vesting- Equity Awards Granted During Year that Vested During Year for Non-PEO Average Change in Fair Value from Last Day of Prior Year to Vesting Date of Unvested Equity Awards that Vested During Year for Non-PEO Total - Average Non-PEO 2022 — (228,123) 289,716 449,755 511,348 2021 278,739 449,732 — 94,333 822,804 2020 326,654 221,552 — 30,732 578,938 (4) The Peer Group TSR set forth in this table utilizes the NASDAQ Telecommunications Index (“NASDAQ Telecom Index”), which we also utilize in the stock performance graph required by Item 201(e) of Regulation S-K (5) We determined Adjusted EBIT to be the most important financial performance measure us ed t Non-PEO non-GAAP the non-cash change other non-GAAP exclusions | ||
| Company Selected Measure Name | Adjusted EBIT | ||
| Named Executive Officers, Footnote [Text Block] | (1) The PEO for each year presented was Thomas R. Stanton. The individuals comprising the Non-PEO 2022 2021 2020 Michael K. Foliano Michael K. Foliano Michael K. Foliano James D. Wilson, Jr. James D. Wilson, Jr. James D. Wilson, Jr. Ronald D. Centis Ronald D. Centis Ronald D. Centis Raymond Harris Raymond Harris Eduard Scheiterer Christoph Glingener | ||
| Peer Group Issuers, Footnote [Text Block] | The Peer Group TSR set forth in this table utilizes the NASDAQ Telecommunications Index (“NASDAQ Telecom Index”), which we also utilize in the stock performance graph required by Item 201(e) of Regulation S-K | ||
| PEO Total Compensation Amount | $ 10,467,712 | $ 4,515,356 | $ 2,898,033 |
| PEO Actually Paid Compensation Amount | $ 9,153,853 | 6,565,639 | 4,106,999 |
| Adjustment To PEO Compensation, Footnote [Text Block] | Year Summary Compensation Thomas R. Stanton Exclusion of Stock Thomas R. Stanton Inclusion of Equity Thomas R. Stanton Compensation 2022 10,467,712 (8,632,599) 7,318,740 9,153,853 2021 4,515,356 (2,503,918) 4,554,201 6,565,639 2020 2,898,033 (1,846,036) 3,055,002 4,106,999 Year Year-End Fair Value of Equity Awards Granted During Year That Remained Unvested as of Last Day of Year for Thomas R. Stanton Change in Fair Value from Last Day of Prior Year Year of Unvested Equity Awards for Thomas R. Stanton Vesting-Date Fair Value of Equity Awards Granted During Year that Vested During Year for Thomas R. Stanton Change in Fair Value During Year for Thomas R. Stanton Total -Inclusion of 2022 5,844,855 (1,132,391) 1,158,854 1,447,422 7,318,740 2021 1,507,454 2,288,391 — 758,356 4,554,201 2020 1,578,027 1,271,442 — 205,533 3,055,002 | ||
| Non-PEO NEO Average Total Compensation Amount | $ 1,110,338 | 1,155,022 | 900,561 |
| Non-PEO NEO Average Compensation Actually Paid Amount | $ 1,053,973 | 1,381,134 | 1,059,643 |
| Adjustment to Non-PEO NEO Compensation Footnote [Text Block] | Year Average Summary Non-PEO Average Exclusion of Non-PEO Average Inclusion Non-PEO Average Non-PEO NEOs 2022 1,110,338 (567,713) 511,348 1,053,973 2021 1,155,022 (596,692) 822,804 1,381,134 2020 900,561 (419,856) 578,938 1,059,643 Year Average Year-End Fair Value of Equity Awards Granted During Year That Remained Unvested as of Last Day of Year for Non-PEO Average Change in Fair Value from Last Day of Prior Year to Last Day of Year of Unvested Equity Awards for Non-PEO Average Vesting- Equity Awards Granted During Year that Vested During Year for Non-PEO Average Change in Fair Value from Last Day of Prior Year to Vesting Date of Unvested Equity Awards that Vested During Year for Non-PEO Total - Average Non-PEO 2022 — (228,123) 289,716 449,755 511,348 2021 278,739 449,732 — 94,333 822,804 2020 326,654 221,552 — 30,732 578,938 | ||
| Compensation Actually Paid vs. Total Shareholder Return [Text Block] | The following chart sets forth the relationship between Compensation Actually Paid to our PEO, the average of Compensation Actually Paid to our other NEOs, and the Company’s cumulative TSR over the three most recently completed fiscal years. | ||
| Compensation Actually Paid vs. Net Income [Text Block] | The following chart sets forth the relationship between Compensation Actually Paid to our PEO, the average of Compensation Actually Paid to our other NEOs, and our net income during the three most recently completed fiscal years. | ||
| Compensation Actually Paid vs. Company Selected Measure [Text Block] | The following chart sets forth the relationship between Compensation Actually Paid to our PEO, the average of Compensation Actually Paid to our Non-PEO | ||
| Total Shareholder Return Vs Peer Group [Text Block] | The following chart compares our cumulative TSR over the three most recently completed fiscal years to that of the NASDAQ Telecommunications Index over the same period. | ||
| Tabular List [Table Text Block] | Tabular List of Most Important Financial Performance Measures The following table presents the financial performance measures that the Company considers to have been the most important in linking Compensation Actually Paid to our PEO and other NEOs for 2022 to Company performance. The measures in this table are not ranked. Adjusted EBIT Gross Margin Relative TSR | ||
| Total Shareholder Return Amount | $ 203.51 | 243.02 | 154.37 |
| Peer Group Total Shareholder Return Amount | 100.08 | 131.83 | 124.2 |
| Net Income (Loss) | $ (8,900,000) | $ (8,600,000) | $ 2,400,000 |
| Company Selected Measure Amount | 52.2 | 11.3 | 10.8 |
| PEO Name | Thomas R. Stanton | ||
| Measure [Axis]: 1 | |||
| Pay vs Performance Disclosure [Table] | |||
| Measure Name | Adjusted EBIT | ||
| Non-GAAP Measure Description [Text Block] | We determined Adjusted EBIT to be the most important financial performance measure us ed t Non-PEO non-GAAP the non-cash change other non-GAAP exclusions | ||
| Measure [Axis]: 2 | |||
| Pay vs Performance Disclosure [Table] | |||
| Measure Name | Gross Margin | ||
| Measure [Axis]: 3 | |||
| Pay vs Performance Disclosure [Table] | |||
| Measure Name | Relative TSR | ||
| PEO [Member] | Exclusion of Stock Awards for Thomas R. Stanton [Member] | |||
| Pay vs Performance Disclosure [Table] | |||
| Adjustment to Compensation Amount | $ (8,632,599) | $ (2,503,918) | $ (1,846,036) |
| PEO [Member] | Inclusion of Equity Values for Thomas R. Stanton [Member] | |||
| Pay vs Performance Disclosure [Table] | |||
| Adjustment to Compensation Amount | 7,318,740 | 4,554,201 | 3,055,002 |
| PEO [Member] | Year End Fair Value of Equity Awards Granted During Year That Remained Unvested as of Last Day of Year for Thomas R. Stanton [Member] | |||
| Pay vs Performance Disclosure [Table] | |||
| Adjustment to Compensation Amount | 5,844,855 | 1,507,454 | 1,578,027 |
| PEO [Member] | Change in Fair Value from Last Day of Prior Year to Last Day of Year of Unvested Equity Awards for Thomas R. Stanton [Member] | |||
| Pay vs Performance Disclosure [Table] | |||
| Adjustment to Compensation Amount | (1,132,391) | 2,288,391 | 1,271,442 |
| PEO [Member] | Vesting Date Fair Value of Equity Awards Granted During Year that Vested During Year for Thomas R. Stanton [Member] | |||
| Pay vs Performance Disclosure [Table] | |||
| Adjustment to Compensation Amount | 1,158,854 | 0 | 0 |
| PEO [Member] | Change In Fair Value From Last Day Of Prior Year To Vesting Date Of Unvested Equity Awards That Vested During Year For Thomas R. Stanton [Member] | |||
| Pay vs Performance Disclosure [Table] | |||
| Adjustment to Compensation Amount | 1,447,422 | 758,356 | 205,533 |
| Non-PEO NEO [Member] | Exclusion of Stock Awards for Thomas R. Stanton [Member] | |||
| Pay vs Performance Disclosure [Table] | |||
| Adjustment to Compensation Amount | (567,713) | (596,692) | (419,856) |
| Non-PEO NEO [Member] | Inclusion of Equity Values for Thomas R. Stanton [Member] | |||
| Pay vs Performance Disclosure [Table] | |||
| Adjustment to Compensation Amount | 511,348 | 822,804 | 578,938 |
| Non-PEO NEO [Member] | Year End Fair Value of Equity Awards Granted During Year That Remained Unvested as of Last Day of Year for Thomas R. Stanton [Member] | |||
| Pay vs Performance Disclosure [Table] | |||
| Adjustment to Compensation Amount | 0 | 278,739 | 326,654 |
| Non-PEO NEO [Member] | Change in Fair Value from Last Day of Prior Year to Last Day of Year of Unvested Equity Awards for Thomas R. Stanton [Member] | |||
| Pay vs Performance Disclosure [Table] | |||
| Adjustment to Compensation Amount | (228,123) | 449,732 | 221,552 |
| Non-PEO NEO [Member] | Vesting Date Fair Value of Equity Awards Granted During Year that Vested During Year for Thomas R. Stanton [Member] | |||
| Pay vs Performance Disclosure [Table] | |||
| Adjustment to Compensation Amount | 289,716 | 0 | 0 |
| Non-PEO NEO [Member] | Change In Fair Value From Last Day Of Prior Year To Vesting Date Of Unvested Equity Awards That Vested During Year For Thomas R. Stanton [Member] | |||
| Pay vs Performance Disclosure [Table] | |||
| Adjustment to Compensation Amount | $ 449,755 | $ 94,333 | $ 30,732 |
