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Summary of Significant Accounting Policies - Summary of Impact of Revision to Specific Line Items in Consolidated Statements of (loss) Income (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Less: Net Income attributable to non-controlling interest [1] $ 2,882   $ 2,512  
Net Loss attributable to ADTRAN Holdings, Inc. $ (39,097) $ 2,143 $ (79,180) $ 1,016
(Loss) earnings per common share attributable to ADTRAN Holdings, Inc. - basic $ (0.5) $ 0.04 $ (1.01) $ 0.02
(Loss) earnings per common share attributable to ADTRAN Holdings, Inc. - diluted $ (0.5) $ 0.04 $ (1.01) $ 0.02
Comprehensive Income attributable to non-controlling interest $ 2,882   $ 2,894  
Comprehensive Loss attributable to ADTRAN Holdings, Inc., net of tax (32,140) $ (997) (63,823) $ (3,766)
As Reported [Member]        
Less: Net Income attributable to non-controlling interest (2,881)   (8,870)  
Net Loss attributable to ADTRAN Holdings, Inc. $ (33,334)   $ (67,798)  
(Loss) earnings per common share attributable to ADTRAN Holdings, Inc. - basic $ (0.43)   $ (0.87)  
(Loss) earnings per common share attributable to ADTRAN Holdings, Inc. - diluted $ (0.43)   $ (0.87)  
Comprehensive Income attributable to non-controlling interest     $ 244  
Comprehensive Loss attributable to ADTRAN Holdings, Inc., net of tax $ (29,258)   (61,173)  
Adjustment [Member]        
Less: Net Income attributable to non-controlling interest 5,763   11,382  
Net Loss attributable to ADTRAN Holdings, Inc. $ (5,763)   $ (11,382)  
(Loss) earnings per common share attributable to ADTRAN Holdings, Inc. - basic $ (0.07)   $ (0.14)  
(Loss) earnings per common share attributable to ADTRAN Holdings, Inc. - diluted $ (0.07)   $ (0.14)  
Comprehensive Income attributable to non-controlling interest $ 2,882   $ 2,650  
Comprehensive Loss attributable to ADTRAN Holdings, Inc., net of tax $ (2,882)   $ (2,650)  
[1] For the three and six months ended June 30, 2023, we have recognized $2.9 million and $5.7 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 six months ended June 30, 2023.