XML 80 R61.htm IDEA: XBRL DOCUMENT
v3.22.4

Commitments and Contingencies - Additional Information (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Dec. 31, 2021 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | May 31, 2022
Commitments And Contingencies [Line Items] |  |  |  |  |
Operating leases, term of contract |  |  |  |  | 10 years
Rent expense |  | $ 16.0 | $ 16.8 | $ 17.3 |
Minimum Remaining Contractual Obligation For License and Service Contract |  |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |  |
Loss contingency | $ 0.9 |  |  |  |
Minimum |  |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |  |
LOC contract period requirement |  | 1 year |  |  |
Operating leases, term of contract |  | 1 month |  |  |
Maximum |  |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |  |
LOC contract period requirement |  | 3 years |  |  |
Operating leases, term of contract |  | 5 years |  |  |

X
- Definition Commitments And Contingencies [Line Items] + References No definition available. + Details
Name: | spok_CommitmentsAndContingenciesLineItems
Namespace Prefix: | spok_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition LOC Contract Period Requirement + References No definition available. + Details
Name: | spok_LOCContractPeriodRequirement
Namespace Prefix: | spok_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918673-209980 + Details
Name: | us-gaap_LesseeOperatingLeaseTermOfContract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

X
- Definition The amount of loss pertaining to the specified contingency that was charged against earnings in the period, including the effects of revisions in previously reported estimates. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=121557415&loc=d3e14326-108349 + Details
Name: | us-gaap_LossContingencyLossInPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of operating lease expense. Excludes sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 4 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=123391704&loc=SL77918638-209977 + Details
Name: | us-gaap_OperatingLeaseExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=spok_MinimumRemainingContractualObligationForLicenseAndServiceContractMember
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: |