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(Loss) Earnings Per Share (Tables) | 6 Months Ended
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Jun. 30, 2023
Earnings Per Share [Abstract] |
Summary of Calculation of Basic and Diluted (Loss) Earnings Per Share | The calculation of basic and diluted (loss) earnings per share is as follows:
|  | Three Months Ended |  |  | Six Months Ended |
|  | June 30, |  |  | June 30, |
(In thousands, except per share amounts) |  | 2023 (As Restated) |  |  | 2022 |  |  | 2023 (As Restated) |  |  | 2022 |
Numerator |  |  |  |  |  |  |  |  |  |  |  |
Net (loss) income attributable to ADTRAN Holdings, Inc. |  | $ | (39,097 | ) |  | $ | 2,143 |  |  | $ | (79,180 | ) |  | $ | 1,016 |
Denominator |  |  |  |  |  |  |  |  |  |  |  |
Weighted average number of shares – basic |  |  | 78,366 |  |  |  | 49,123 |  |  |  | 78,364 |  |  |  | 49,110 |
Effect of dilutive securities |  |  |  |  |  |  |  |  |  |  |  |
Stock options |  |  | — |  |  |  | 84 |  |  |  | — |  |  |  | 111 |
PSUs, RSUs and restricted stock |  |  | — |  |  |  | 602 |  |  |  | — |  |  |  | 592 |
Weighted average number of shares – diluted |  |  | 78,366 |  |  |  | 49,809 |  |  |  | 78,364 |  |  |  | 49,813 |
(Loss) earnings per share attributable to ADTRAN Holdings, Inc. – basic |  | $ | (0.50 | ) |  | $ | 0.04 |  |  | $ | (1.01 | ) |  | $ | 0.02 |
(Loss) earnings per share attributable to ADTRAN Holdings, Inc. – diluted |  | $ | (0.50 | ) |  | $ | 0.04 |  |  | $ | (1.01 | ) |  | $ | 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 -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-1 + Details
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