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Document and Entity Information
Aug. 06, 2023
Cover [Abstract]  
Amendment Flag true
Entity Central Index Key 0000926282
Document Type 8-K/A
Document Period End Date Aug. 06, 2023
Entity Registrant Name ADTRAN Holdings, Inc.
Entity Incorporation State Country Code DE
Entity File Number 001-41446
Entity Tax Identification Number 87-2164282
Entity Address, Address Line One 901 Explorer Boulevard
Entity Address, City or Town Huntsville
Entity Address, State or Province AL
Entity Address, Postal Zip Code 35806-2807
City Area Code (256)
Local Phone Number 963-8000
Written Communications false
Soliciting Material false
Pre Commencement Tender Offer false
Pre Commencement Issuer Tender Offer false
Security 12b Title Common Stock, Par Value $0.01
Trading Symbol ADTN
Security Exchange Name NASDAQ
Entity Emerging Growth Company false
Amendment Description This Current Report on Form 8-K/A amends the Current Report on Form 8-K of ADTRAN Holdings, Inc. (the “Company”) originally furnished by the Company to the Securities and Exchange Commission on August 7, 2023 (the “Initial 8-K”). The sole purpose for filing this Form 8-K/A is to fix an incorrect ex-dividend date contained in Item 2.02 and Exhibit 99.1 of the Initial 8-K, as described further below. Except as stated in this Explanatory Note, no other changes have been made to the Initial 8-K or Exhibit 99.1 thereto.