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Commitments and Contingencies - Schedule of Future Minimum Lease Payments (Details) - Office and transmitter buildings $ in Thousands | Dec. 31, 2022 USD ($)
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Lessee, Lease, Description [Line Items] |
2023 | $ 5,777
2024 | 3,843
2025 | 2,820
2026 | 2,252
2027 | 1,100
Thereafter | 2,470
Total | $ 18,262

X
- Definition Lessee, Noncancelable Operating Lease, Liability, to be Paid + References No definition available. + Details
Name: | spok_LesseeNoncancelableOperatingLeaseLiabilityToBePaid
Namespace Prefix: | spok_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Lessee, Noncancelable Operating Lease, Liability, to be Paid, after Year Five + References No definition available. + Details
Name: | spok_LesseeNoncancelableOperatingLeaseLiabilityToBePaidAfterYearFive
Namespace Prefix: | spok_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Lessee, Noncancelable Operating Lease, Liability, to be Paid, Year Five + References No definition available. + Details
Name: | spok_LesseeNoncancelableOperatingLeaseLiabilityToBePaidYearFive
Namespace Prefix: | spok_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Lessee, Noncancelable Operating Lease, Liability, to be Paid, Year Four + References No definition available. + Details
Name: | spok_LesseeNoncancelableOperatingLeaseLiabilityToBePaidYearFour
Namespace Prefix: | spok_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Lessee, Noncancelable Operating Lease, Liability, to be Paid, Year One + References No definition available. + Details
Name: | spok_LesseeNoncancelableOperatingLeaseLiabilityToBePaidYearOne
Namespace Prefix: | spok_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Lessee, Noncancelable Operating Lease, Liability, to be Paid, Year Three + References No definition available. + Details
Name: | spok_LesseeNoncancelableOperatingLeaseLiabilityToBePaidYearThree
Namespace Prefix: | spok_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Lessee, Noncancelable Operating Lease, Liability, to be Paid, Year Two + References No definition available. + Details
Name: | spok_LesseeNoncancelableOperatingLeaseLiabilityToBePaidYearTwo
Namespace Prefix: | spok_
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_LesseeLeaseDescriptionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=spok_OfficeAndTransmitterBuildingsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |