XML 33 R43.htm IDEA: XBRL DOCUMENT
v3.19.3

Goodwill and Other Intangible Assets - Summary of Intangible Assets (Detail) - USD ($) $ in Thousands | 9 Months Ended |
--- | --- | ---
Sep. 30, 2019 | Dec. 31, 2018
Finite Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 3,140,339 | $ 2,950,906
Accumulated Amortization | 2,120,686 | 2,035,453
Goodwill gross carrying amount | 2,156,221 | 2,172,922
Goodwill accumulated amortization | 253,536 | 253,536
Customer Lists and Contracts [Member] |  |
Finite Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 641,221 | 610,376
Accumulated Amortization | $ 533,148 | 514,928
Customer Lists and Contracts [Member] | Minimum [Member] |  |
Finite Lived Intangible Assets [Line Items] |  |
Estimated Life (Years) | 7 years |
Customer Lists and Contracts [Member] | Maximum [Member] |  |
Finite Lived Intangible Assets [Line Items] |  |
Estimated Life (Years) | 10 years |
Non-competition Agreements [Member] |  |
Finite Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 65,983 | 65,771
Accumulated Amortization | $ 64,312 | 64,119
Non-competition Agreements [Member] | Minimum [Member] |  |
Finite Lived Intangible Assets [Line Items] |  |
Estimated Life (Years) | 3 years |
Non-competition Agreements [Member] | Maximum [Member] |  |
Finite Lived Intangible Assets [Line Items] |  |
Estimated Life (Years) | 15 years |
Site Locations [Member] |  |
Finite Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 2,386,446 | 2,228,767
Accumulated Amortization | $ 1,487,218 | 1,422,794
Site Locations [Member] | Maximum [Member] |  |
Finite Lived Intangible Assets [Line Items] |  |
Estimated Life (Years) | 15 years |
Other [Member] |  |
Finite Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 46,689 | 45,992
Accumulated Amortization | $ 36,008 | $ 33,612
Other [Member] | Minimum [Member] |  |
Finite Lived Intangible Assets [Line Items] |  |
Estimated Life (Years) | 2 years |
Other [Member] | Maximum [Member] |  |
Finite Lived Intangible Assets [Line Items] |  |
Estimated Life (Years) | 15 years |

X
- Definition The accumulated amount of amortization of goodwill as of the balance sheet date. + References No definition available. + Details
Name: | lamr_GoodwillAccumulatedAmortization
Namespace Prefix: | lamr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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: | duration

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 before accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267 + Details
Name: | us-gaap_GoodwillGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
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: |

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

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