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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