XML 89 R85.htm IDEA: XBRL DOCUMENT
v3.24.0.1

Intangible Assets - Summary of Intangible Assets (Detail) - USD ($) $ in Thousands | Mar. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Finite Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 470,335 | $ 467,689
Accumulated Amortization | (91,049) | (66,478)
Net Book Value | $ 379,286 | 401,211
Customer Relationships [Member] |  |
Finite Lived Intangible Assets [Line Items] |  |
Weighted Average Useful Life (in years) | 10 years 10 months 24 days |
Gross Carrying Amount | $ 54,103 | 55,517
Accumulated Amortization | (12,180) | (12,772)
Net Book Value | $ 41,923 | 42,745
Backlog [Member] |  |
Finite Lived Intangible Assets [Line Items] |  |
Weighted Average Useful Life (in years) | 1 year 7 months 6 days |
Gross Carrying Amount | $ 56,382 | 55,782
Accumulated Amortization | (35,348) | (22,725)
Net Book Value | $ 21,034 | 33,057
Developed Technology [Member] |  |
Finite Lived Intangible Assets [Line Items] |  |
Weighted Average Useful Life (in years) | 8 years 6 months |
Gross Carrying Amount | $ 323,723 | 320,364
Accumulated Amortization | (31,604) | (21,856)
Net Book Value | $ 292,119 | 298,508
Licensed Technology [Member] |  |
Finite Lived Intangible Assets [Line Items] |  |
Weighted Average Useful Life (in years) | 9 years |
Gross Carrying Amount | $ 5,900 | 5,900
Accumulated Amortization | (3,305) | (3,141)
Net Book Value | $ 2,595 | 2,759
Licensing Agreements [Member] |  |
Finite Lived Intangible Assets [Line Items] |  |
Weighted Average Useful Life (in years) | 8 years 6 months |
Gross Carrying Amount | $ 560 | 560
Accumulated Amortization | (316) | (298)
Net Book Value | $ 244 | 262
Patent [Member] |  |
Finite Lived Intangible Assets [Line Items] |  |
Weighted Average Useful Life (in years) | 7 years 3 months 18 days |
Gross Carrying Amount | $ 500 | 500
Accumulated Amortization | (449) | (431)
Net Book Value | $ 51 | 69
Trade Names [Member] |  |
Finite Lived Intangible Assets [Line Items] |  |
Weighted Average Useful Life (in years) | 3 years |
Gross Carrying Amount | $ 29,167 | 29,066
Accumulated Amortization | (7,847) | (5,255)
Net Book Value | $ 21,320 | $ 23,811

X
- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | us-gaap_FiniteLivedIntangibleAssetUsefulLife
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

X
- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(16)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482665/350-30-50-2 + Details
Name: | us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 928 -SubTopic 340 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147483147/928-340-50-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482665/350-30-50-2 + Details
Name: | us-gaap_FiniteLivedIntangibleAssetsGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 926 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org//1943274/2147483154/926-20-50-5 + Details
Name: | us-gaap_FiniteLivedIntangibleAssetsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 926 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org//1943274/2147483154/926-20-50-5 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482665/350-30-50-2 + Details
Name: | us-gaap_FiniteLivedIntangibleAssetsNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_CustomerRelationshipsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_OrderOrProductionBacklogMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_DevelopedTechnologyRightsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=adtn_LicensedTechnologyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_LicensingAgreementsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_PatentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_TradeNamesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |