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Stock-Based Compensation - Summary of Stock Options Outstanding (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2023 | Dec. 31, 2022
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |
Number of Stock Options, Stock options outstanding, Beginning Balance | 3,148 |
Number of Stock Options, Stock options granted | 8 |
Number of Stock Options, Stock options exercised | (6) |
Number of Stock Options, Stock options forfeited | (36) |
Number of Stock Options, Stock options expired | (26) |
Number of Stock Options, Stock options outstanding, Ending Balance | 3,088 | 3,148
Number of Stock Options, Stock options exercisable | 1,701 |
Weighted Avg. Exercise Price, Stock options outstanding, Beginning Balance | $ 14.37 |
Weighted Avg. Exercise Price, Stock options granted | 12.17 |
Weighted Avg. Exercise Price, Stock options exercised | 9.82 |
Weighted Avg. Exercise Price, Stock options forfeited | 12.24 |
Weighted Avg. Exercise Price, Stock options expired | 15.46 |
Weighted Avg. Exercise Price, Stock options outstanding, Ending Balance | 14.39 | $ 14.37
Weighted Avg. Exercise Price, Stock options exercisable | $ 15.89 |
Weighted Avg. Remaining Contractual Life In Years, Stock options outstanding | 2 years 11 months 4 days | 3 years 5 months 1 day
Weighted Avg. Remaining Contractual Life in Years, Stock options exercisable | 1 year 5 months 23 days |
Aggregate Intrinsic Value, Stock options outstanding | $ 16,251 |
Aggregate Intrinsic Value, Stock options outstanding | 2,582 | $ 16,251
Aggregate Intrinsic Value, Stock options exercisable | $ 1,514 |
Adtran Networks SE [Member] |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |
Number of Stock Options, Stock options outstanding, Beginning Balance | 81 |
Number of Stock Options, Stock options exercised | (12) |
Number of Stock Options, Stock options expired | (1) |
Number of Stock Options, Stock options outstanding, Ending Balance | 68 | 81
Number of Stock Options, Stock options exercisable | 13 |
Weighted Avg. Exercise Price, Stock options outstanding, Beginning Balance | $ 8.58 |
Weighted Avg. Exercise Price, Stock options exercised | 8.47 |
Weighted Avg. Exercise Price, Stock options expired | 9.49 |
Weighted Avg. Exercise Price, Stock options outstanding, Ending Balance | 8.77 | $ 8.58
Weighted Avg. Exercise Price, Stock options exercisable | $ 6.41 |
Weighted Avg. Remaining Contractual Life In Years, Stock options outstanding | 3 years 10 months 17 days | 4 years
Weighted Avg. Remaining Contractual Life in Years, Stock options exercisable | 1 year 4 months 20 days |
Aggregate Intrinsic Value, Stock options outstanding | $ 1,222 |
Aggregate Intrinsic Value, Stock options outstanding | 865 | $ 1,222
Aggregate Intrinsic Value, Stock options exercisable | $ 197 |

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