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Loss Per Share (Tables) | 3 Months Ended
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Mar. 31, 2023
Earnings Per Share [Abstract] |
Summary of Calculation of Basic and Diluted Loss Per Share | The calculation of basic and diluted loss per share is as follows:
|  | Three Months Ended |
|  | March 31, |
(In thousands, except per share amounts) |  | 2023 |  |  | 2022 |
Numerator |  |  |  |  |  |
Net loss attributable to ADTRAN Holdings, Inc. |  | $ | (34,464 | ) |  | $ | (1,127 | )
Denominator |  |  |  |  |  |
Weighted average number of shares – basic |  |  | 78,358 |  |  |  | 49,113 |
Effect of dilutive securities |  |  |  |  |  |
Stock options |  |  | — |  |  |  | — |
PSUs, RSUs and restricted stock |  |  | — |  |  |  | — |
Weighted average number of shares – diluted |  |  | 78,358 |  |  |  | 49,113 |
Loss per share attributable to ADTRAN Holdings, Inc. – basic |  | $ | (0.44 | ) |  | $ | (0.02 | )
Loss per share attributable to ADTRAN Holdings, Inc. – diluted |  | $ | (0.44 | ) |  | $ | (0.02 | )

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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