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Summary of Significant Accounting Policies - Additional Information (Details) € in Thousands, $ in Thousands | 3 Months Ended | 9 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Sep. 30, 2023 EUR (€) shares | Sep. 30, 2023 USD ($) shares | Sep. 30, 2023 EUR (€) shares | Sep. 30, 2023 USD ($) shares | Sep. 30, 2023 USD ($) | Dec. 31, 2022 | Oct. 18, 2022 shares | Jul. 18, 2022 USD ($)
Summary Of Significant Accounting Policy [Line Items] |  |  |  |  |  |  |  |
Percentage of guaranteed interest rate | 5.00% |  | 5.00% |  | 5.00% |  |  |
Percentage of guaranteed interest rate plus a variable component | 3.12% |  | 3.12% |  | 3.12% |  |  |
Aggregate exit compensation payments obligation including guaranteed interest | € 325,300 |  | € 325,300 |  | $ 344,200 |  |  |
Expire date of exit compensation |  |  | Mar. 16, 2023 | Mar. 16, 2023 |  |  |  |
Annual recurring compensation obligation |  |  | € 10,600 | $ 11,200 |  |  |  |
Accrued annual recurring compensation obligation | $ |  | $ 2,900 |  | $ 8,600 |  |  |  |
Number of shares tendered | 1,000 | 1,000 | 64,000 | 64,000 |  |  |  |
Exit compensation payments | € 8 | $ 9 | € 1,100 | $ 1,200 |  |  |  |
ASU 2021-08 [Member] |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policy [Line Items] |  |  |  |  |  |  |  |
Change in Accounting Principle, Accounting Standards Update, Adopted [true false] | true |  | true |  | true |  |  |
Change in Accounting Principle, Accounting Standards Update, Adoption Date | Jul. 01, 2022 |  | Jul. 01, 2022 |  | Jul. 01, 2022 |  |  |
Administrative Agent [Member] |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policy [Line Items] |  |  |  |  |  |  |  |
Credit agreement maximum borrowing capacity | $ |  |  |  |  |  |  |  | $ 100,000
Credit agreement current borrowing capacity | $ |  |  |  |  |  |  |  | $ 400,000
Adtran Networks SE [Member] |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policy [Line Items] |  |  |  |  |  |  |  |
Number of shares tendered |  |  | 64,000 | 64,000 |  |  |  |
Exit compensation payments | € 8 | $ 9 | € 1,100 | $ 1,200 |  |  |  |
Equity method ownership percentage | 34.60% |  | 34.60% |  | 34.60% | 34.70% |  |
Adtran Networks SE [Member] | Maximum [Member] |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policy [Line Items] |  |  |  |  |  |  |  |
Number of additional shares authorized to purchase |  |  |  |  |  |  | 15,346,544 |
Number of shares tendered | 1,000 | 1,000 |  |  |  |  |  |

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