Condensed Consolidated Statements of Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Statement of Comprehensive Income [Abstract]
Net Loss	$ (40,453)	$ (1,127)
Other Comprehensive Income (Loss), net of tax
Net unrealized gain (loss) on available-for-sale securities	69	(724)
Defined benefit plan adjustments	35	(13)
Foreign currency translation gain (loss)	8,678	(905)
Other Comprehensive Income (Loss), net of tax	8,782	(1,642)
Less: Comprehensive Income attributable to non-controlling interest, net of tax	244
Comprehensive Loss attributable to ADTRAN Holdings, Inc., net of tax	$ (31,915)	$ (2,769)