XML 111 R94.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

Intangible Assets - Summary of Intangible Assets (Detail) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Finite Lived Intangible Assets [Line Items] |  |
Gross Value | $ 42,596 | $ 46,456
Accumulated Amortization | (14,775) | (13,273)
Net Value | 27,821 | 33,183
Customer Relationships [Member] |  |
Finite Lived Intangible Assets [Line Items] |  |
Gross Value | 22,356 | 22,455
Accumulated Amortization | (7,233) | (5,380)
Net Value | 15,123 | 17,075
Developed Technology [Member] |  |
Finite Lived Intangible Assets [Line Items] |  |
Gross Value | 10,170 | 12,801
Accumulated Amortization | (3,379) | (4,867)
Net Value | 6,791 | 7,934
Licensed Technology [Member] |  |
Finite Lived Intangible Assets [Line Items] |  |
Gross Value | 5,900 | 5,900
Accumulated Amortization | (1,174) | (520)
Net Value | 4,726 | 5,380
Supplier Relationships [Member] |  |
Finite Lived Intangible Assets [Line Items] |  |
Gross Value | 2,800 | 2,800
Accumulated Amortization | (2,508) | (1,108)
Net Value | 292 | 1,692
Intellectual Property [Member] |  |
Finite Lived Intangible Assets [Line Items] |  |
Gross Value |  | 930
Accumulated Amortization |  | (930)
Licensing Agreements [Member] |  |
Finite Lived Intangible Assets [Line Items] |  |
Gross Value | 560 | 560
Accumulated Amortization | (79) | (5)
Net Value | 481 | 555
Patent [Member] |  |
Finite Lived Intangible Assets [Line Items] |  |
Gross Value | 500 | 500
Accumulated Amortization | (226) | (157)
Net Value | 274 | 343
Trade Names [Member] |  |
Finite Lived Intangible Assets [Line Items] |  |
Gross Value | 310 | 310
Accumulated Amortization | (176) | (106)
Net Value | $ 134 | 204
Non-compete [Member] |  |
Finite Lived Intangible Assets [Line Items] |  |
Gross Value |  | 200
Accumulated Amortization |  | $ (200)

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 -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + 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 -Publisher FASB -Name Accounting Standards Codification -Topic 928 -SubTopic 340 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6473545&loc=d3e61844-108004 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + 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 No definition available. + 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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + 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_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=adtn_SupplierRelationshipMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_IntellectualPropertyMember
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: |

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