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Consolidated Statements of Loss - USD ($)
shares in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Revenue      
Total Revenue $ 1,149,100,000 $ 1,025,536,000 $ 563,004,000
Cost of Revenue      
Total Cost of Revenue 816,037,000 698,284,000 344,627,000
Gross Profit 333,063,000 327,252,000 218,377,000
Selling, general and administrative expenses 258,149,000 208,889,000 124,414,000
Research and development expenses 258,311,000 173,757,000 108,663,000
Asset impairments 0 17,433,000 0
Goodwill impairment 37,874,000 0 0
Operating Loss (221,271,000) (72,827,000) (14,700,000)
Interest and dividend income 2,340,000 2,123,000 2,844,000
Interest expense (16,299,000) (3,437,000) (34,000)
Net investment gain (loss) 2,754,000 (11,339,000) 1,761,000
Other income, net 1,266,000 14,517,000 3,824,000
Loss Before Income Taxes (231,210,000) (70,963,000) (6,305,000)
Income tax (expense) benefit (28,133,000) 62,075,000 (2,330,000)
Net Loss (259,343,000) (8,888,000) (8,635,000)
Less: Net Income (Loss) attributable to non-controlling interest [1] 8,345,000 (6,851,000)  
Net Loss attributable to ADTRAN Holdings, Inc. $ (267,688,000) $ (2,037,000) $ (8,635,000)
Weighted average shares outstanding – basic 78,416 62,346 48,582
Weighted average shares outstanding – diluted 78,416 62,346 48,582
Loss per common share attributable to ADTRAN Holdings, Inc. - basic $ (3.41) $ (0.03) $ (0.18)
Loss per common share attributable to ADTRAN Holdings, Inc. - diluted $ (3.41) $ (0.03) $ (0.18)
Network Solutions [Member]      
Revenue      
Total Revenue $ 974,389,000 $ 916,793,000 $ 498,834,000
Cost of Revenue      
Total Cost of Revenue 722,582,000 647,105,000 307,841,000
Gross Profit 227,494,000 269,688,000 190,993,000
Network Solutions - Inventory Write Down [Member]      
Cost of Revenue      
Total Cost of Revenue 24,313,000    
Services & Support [Member]      
Revenue      
Total Revenue 174,711,000 108,743,000 64,170,000
Cost of Revenue      
Total Cost of Revenue 69,142,000 51,179,000 36,786,000
Gross Profit 105,569,000 $ 57,564,000 $ 27,384,000
Goodwill impairment $ 37,900,000    
[1] For the year ended December 31, 2023, we have recognized $11.5 million, 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 year ended December 31, 2023.