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Consolidated Statements of (Loss) Income - USD ($)
shares in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Revenue      
Total revenue $ 1,025,536,000 $ 563,004,000 $ 506,510,000
Cost of Revenue      
Total Cost of Revenue 698,284,000 344,627,000 288,959,000
Gross Profit 327,252,000 218,377,000 217,551,000
Selling, general and administrative expenses 208,889,000 124,414,000 113,972,000
Research and development expenses 173,757,000 108,663,000 113,287,000
Asset impairment 17,433,000 0 65,000
Operating Loss (72,827,000) (14,700,000) (9,773,000)
Interest and dividend income 2,123,000 2,844,000 1,936,000
Interest expense (3,437,000) (34,000) (5,000)
Net investment (loss) gain (11,339,000) 1,761,000 4,850,000
Other income (expense), net 14,517,000 3,824,000 (3,254,000)
Loss Before Income Taxes (70,963,000) (6,305,000) (6,246,000)
Income tax benefit (expense) 62,075,000 (2,330,000) 8,624,000
Net (Loss) Income (8,888,000) (8,635,000) 2,378,000
Less: Net Loss attributable to non-controlling interest (6,851,000)    
Net Income (Loss) $ (2,037,000) $ (8,635,000) $ 2,378,000
Weighted average shares outstanding – basic 62,346 48,582 47,996
Weighted average shares outstanding – diluted 62,346 48,582 48,288
(Loss) earnings per common share attributable to ADTRAN Holdings, Inc. - basic $ (0.03) $ (0.18) $ 0.05
(Loss) earnings per common share attributable to ADTRAN Holdings, Inc. - diluted $ (0.03) $ (0.18) $ 0.05
Network Solutions [Member]      
Revenue      
Total revenue $ 916,793,000 $ 498,834,000 $ 438,015,000
Cost of Revenue      
Total Cost of Revenue 647,105,000 307,841,000 244,226,000
Gross Profit 269,688,000 190,993,000 193,789,000
Services & Support [Member]      
Revenue      
Total revenue 108,743,000 64,170,000 68,495,000
Cost of Revenue      
Total Cost of Revenue 51,179,000 36,786,000 44,733,000
Gross Profit $ 57,564,000 $ 27,384,000 $ 23,762,000