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Summary of Significant Accounting Policies - Summary of Impact of Revision to Specific Line Items in Previously Reported Condensed Consolidated Statements of Loss (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Income (Loss) attributable to non-controlling interest [1] $ 2,914 $ (2,925) $ 5,426 $ (2,925)
Net loss attributable to ADTRAN Holdings, Inc. $ (78,563) $ (41,934) $ (157,743) $ (40,918)
Loss per common share attributable to ADTRAN Holdings, Inc. - basic $ (1) $ (0.57) $ (2.01) $ (0.72)
Loss per common share attributable to ADTRAN Holdings, Inc. - diluted $ (1) $ (0.57) $ (2.01) $ (0.72)
Comprehensive Income (Loss) attributable to non-controlling interest $ 2,914 $ (10,156) $ 5,808 $ (10,156)
Comprehensive Loss attributable to ADTRAN Holdings, Inc., net of tax (107,971) (58,389) (171,794) (62,155)
As Reported [Member]        
Income (Loss) attributable to non-controlling interest (2,914)   (11,784)  
Net loss attributable to ADTRAN Holdings, Inc. $ (72,735)   $ (140,533)  
Loss per common share attributable to ADTRAN Holdings, Inc. - basic $ (0.93)   $ (1.79)  
Loss per common share attributable to ADTRAN Holdings, Inc. - diluted $ (0.93)   $ (1.79)  
Comprehensive Income (Loss) attributable to non-controlling interest   (94) $ 244 (94)
Comprehensive Loss attributable to ADTRAN Holdings, Inc., net of tax $ (105,057) (68,451) (166,230) (72,217)
Adjustment [Member]        
Income (Loss) attributable to non-controlling interest 5,828   17,210  
Net loss attributable to ADTRAN Holdings, Inc. $ (5,828)   $ (17,210)  
Loss per common share attributable to ADTRAN Holdings, Inc. - basic $ (0.07)   $ (0.22)  
Loss per common share attributable to ADTRAN Holdings, Inc. - diluted $ (0.07)   $ (0.22)  
Comprehensive Income (Loss) attributable to non-controlling interest $ 2,914 (10,062) $ 5,564 (10,062)
Comprehensive Loss attributable to ADTRAN Holdings, Inc., net of tax $ (2,914) $ 10,062 $ (5,564) $ 10,062
[1]

(1) For the three and nine months ended September 30, 2023, we have recognized $2.9 million and $8.6 million, respectively, representing the recurring cash compensation earned by non-controlling interest shareholders post-DPLTA, partially offset by a $3.2 million net loss attributable to non-controlling interests pre-DPLTA for the nine months ended September 30, 2023.