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Condensed Consolidated Statements of Loss (Unaudited) - USD ($)
shares in Thousands, $ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Revenue        
Total Revenue $ 340,709 $ 138,081 $ 667,265 $ 408,846
Cost of Revenue        
Total Cost of Revenue 237,682 90,408 447,416 244,904
Gross Profit 103,027 47,673 219,849 163,942
Selling, general and administrative expenses 74,880 30,972 130,646 89,273
Research and development expenses 59,196 26,759 112,187 82,131
Asset impairments 16,969   16,969  
Operating Loss (48,018) (10,058) (39,953) (7,462)
Interest and dividend income 347 344 768 887
Interest expense (1,303) (6) (1,427) (18)
Net investment (loss) gain (2,691) (63) (10,752) 2,942
Other income, net 2,494 648 2,949 2,673
Loss Before Income Taxes (49,171) (9,135) (48,415) (978)
Income tax benefit (expense) 4,312 (1,292) 4,572 (3,467)
Net Loss (44,859) (10,427) (43,843) (4,445)
Less: Net Loss attributable to non-controlling interest (2,925)   (2,925)  
Net Loss attributable to ADTRAN Holdings, Inc. $ (41,934) $ (10,427) $ (40,918) $ (4,445)
Weighted average shares outstanding – basic 73,036 48,609 57,175 48,470
Weighted average shares outstanding – diluted 73,036 48,609 57,175 48,470
Loss per common share attributable to ADTRAN Holdings, Inc. - basic $ (0.57) $ (0.21) $ (0.72) $ (0.09)
Loss per common share attributable to ADTRAN Holdings, Inc. - diluted $ (0.57) $ (0.21) $ (0.72) $ (0.09)
Network Solutions [Member]        
Revenue        
Total Revenue $ 304,940 $ 120,767 $ 599,306 $ 360,025
Cost of Revenue        
Total Cost of Revenue 222,606 81,029 413,180 216,044
Gross Profit 82,334 39,738 186,126 143,981
Services & Support [Member]        
Revenue        
Total Revenue 35,769 17,314 67,959 48,821
Cost of Revenue        
Total Cost of Revenue 15,076 9,379 34,236 28,860
Gross Profit $ 20,693 $ 7,935 $ 33,723 $ 19,961