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Commitments and Contingencies Narrative (Details) $ in Thousands | Jun. 30, 2021 USD ($)
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FCC spectrum licenses |
Other Commitments [Line Items] |
Other commitment, annual payments | $ 108

X
- Definition Other Commitment, Annual Payments + References No definition available. + Details
Name: | shen_OtherCommitmentAnnualPayments
Namespace Prefix: | shen_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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_OtherCommitmentsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_OtherCommitmentsAxis=shen_FCCSpectrumLicensesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |