XML 107 R99.htm IDEA: XBRL DOCUMENT v3.23.2
Loss Per Share - Summary of Calculation of Basic and Diluted Loss Per Share (Detail) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Numerator    
Net loss attributable to ADTRAN Holdings, Inc. $ (34,464) $ (1,127)
Denominator    
Weighted average number of shares – basic 78,358 49,113
Effect of dilutive securities    
Weighted average number of shares – diluted 78,358 49,113
Loss per share attributable to ADTRAN Holdings, Inc. - basic $ (0.44) $ (0.02)
Loss per share attributable to ADTRAN Holdings, Inc. - diluted $ (0.44) $ (0.02)