XML 43 R33.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Note 1 - Description of Business and Basis of Presentation (Details Textual) | 3 Months Ended
--- | ---
Mar. 31, 2018
Number of States in which Entity Operates | 21
Number of Reportable Segments | 1
Data [Member] |
Number of Customers | 651,550
Video [Member] |
Number of Customers | 350,874
Voice [Member] |
Number of Customers | 131,920

X
- Definition Represents the number of customers. + References No definition available. + Details
Name: | cabo_NumberOfCustomers
Namespace Prefix: | cabo_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. + References No definition available. + Details
Name: | us-gaap_NumberOfReportableSegments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of states the entity operates in as of the balance sheet date. + References No definition available. + Details
Name: | us-gaap_NumberOfStatesInWhichEntityOperates
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | srt_ProductOrServiceAxis=cabo_DataMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=cabo_VideoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=cabo_VoiceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |