| | | | | | | | | | | | | | | | | | | | | |
<?xml version="1.0" encoding="windows-1252"?> |
<FilingSummary> |
| <Version> 3.21.1 </Version> |
| <ProcessingTime/> |
| <ReportFormat> html </ReportFormat> |
| <ContextCount> 253 </ContextCount> |
| <ElementCount> 421 </ElementCount> |
| <EntityCount> 1 </EntityCount> |
| <FootnotesReported> true </FootnotesReported> |
| <SegmentCount> 99 </SegmentCount> |
| <ScenarioCount> 0 </ScenarioCount> |
| <TuplesReported> false </TuplesReported> |
| <UnitCount> 6 </UnitCount> |
| <MyReports> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R1.htm </HtmlFileName> |
| | | <LongName> 000 - Document - Document And Entity Information </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-document-and-entity-information </Role> |
| | | <ShortName> Document And Entity Information </ShortName> |
| | | <MenuCategory> Cover </MenuCategory> |
| | | <Position> 1 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R2.htm </HtmlFileName> |
| | | <LongName> 001 - Statement - Condensed Consolidated Balance Sheets (Current Period Unaudited) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-condensed-consolidated-balance-sheets-current-period-unaudited </Role> |
| | | <ShortName> Condensed Consolidated Balance Sheets (Current Period Unaudited) </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 2 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R3.htm </HtmlFileName> |
| | | <LongName> 002 - Statement - Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-condensed-consolidated-balance-sheets-current-period-unaudited-parentheticals </Role> |
| | | <ShortName> Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 3 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R4.htm </HtmlFileName> |
| | | <LongName> 003 - Statement - Condensed Consolidated Statements of Operations and Comprehensive Income (Unaudited) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-condensed-consolidated-statements-of-operations-and-comprehensive-income-unaudited </Role> |
| | | <ShortName> Condensed Consolidated Statements of Operations and Comprehensive Income (Unaudited) </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 4 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R5.htm </HtmlFileName> |
| | | <LongName> 004 - Statement - Condensed Consolidated Statements of Stockholders' Equity (Unaudited) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-condensed-consolidated-statements-of-stockholders-equity-unaudited </Role> |
| | | <ShortName> Condensed Consolidated Statements of Stockholders' Equity (Unaudited) </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 5 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R6.htm </HtmlFileName> |
| | | <LongName> 005 - Statement - Condensed Consolidated Statements of Stockholders' Equity (Unaudited) (Parentheticals) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-condensed-consolidated-statements-of-stockholders-equity-unaudited-parentheticals </Role> |
| | | <ShortName> Condensed Consolidated Statements of Stockholders' Equity (Unaudited) (Parentheticals) </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 6 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R7.htm </HtmlFileName> |
| | | <LongName> 006 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-condensed-consolidated-statements-of-cash-flows-unaudited </Role> |
| | | <ShortName> Condensed Consolidated Statements of Cash Flows (Unaudited) </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 7 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R8.htm </HtmlFileName> |
| | | <LongName> 007 - Disclosure - Note 1 - Description of Business and Basis of Presentation </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-1-description-of-business-and-basis-of-presentation </Role> |
| | | <ShortName> Note 1 - Description of Business and Basis of Presentation </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 8 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R9.htm </HtmlFileName> |
| | | <LongName> 008 - Disclosure - Note 2 - Valu-Net Acquisition </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-2-valunet-acquisition </Role> |
| | | <ShortName> Note 2 - Valu-Net Acquisition </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 9 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R10.htm </HtmlFileName> |
| | | <LongName> 009 - Disclosure - Note 3 - Revenues </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-3-revenues- </Role> |
| | | <ShortName> Note 3 - Revenues </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 10 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R11.htm </HtmlFileName> |
| | | <LongName> 010 - Disclosure - Note 4 - Operating Assets and Liabilities </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-4-operating-assets-and-liabilities </Role> |
| | | <ShortName> Note 4 - Operating Assets and Liabilities </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 11 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R12.htm </HtmlFileName> |
| | | <LongName> 011 - Disclosure - Note 5 - Equity Investments </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-5-equity-investments- </Role> |
| | | <ShortName> Note 5 - Equity Investments </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 12 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R13.htm </HtmlFileName> |
| | | <LongName> 012 - Disclosure - Note 6 - Property, Plant and Equipment </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-6-property-plant-and-equipment </Role> |
| | | <ShortName> Note 6 - Property, Plant and Equipment </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 13 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R14.htm </HtmlFileName> |
| | | <LongName> 013 - Disclosure - Note 7 - Goodwill and Intangible Assets </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-7-goodwill-and-intangible-assets </Role> |
| | | <ShortName> Note 7 - Goodwill and Intangible Assets </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 14 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R15.htm </HtmlFileName> |
| | | <LongName> 014 - Disclosure - Note 8 - Debt </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-8-debt </Role> |
| | | <ShortName> Note 8 - Debt </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 15 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R16.htm </HtmlFileName> |
| | | <LongName> 015 - Disclosure - Note 9 - Interest Rate Swaps </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-9-interest-rate-swaps </Role> |
| | | <ShortName> Note 9 - Interest Rate Swaps </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 16 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R17.htm </HtmlFileName> |
| | | <LongName> 016 - Disclosure - Note 10 - Fair Value Measurements </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-10-fair-value-measurements </Role> |
| | | <ShortName> Note 10 - Fair Value Measurements </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 17 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R18.htm </HtmlFileName> |
| | | <LongName> 017 - Disclosure - Note 11 - Stockholders' Equity </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-11-stockholders-equity </Role> |
| | | <ShortName> Note 11 - Stockholders' Equity </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 18 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R19.htm </HtmlFileName> |
| | | <LongName> 018 - Disclosure - Note 12 - Equity-based Compensation </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-12-equitybased-compensation </Role> |
| | | <ShortName> Note 12 - Equity-based Compensation </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 19 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R20.htm </HtmlFileName> |
| | | <LongName> 019 - Disclosure - Note 13 - Income Taxes </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-13-income-taxes- </Role> |
| | | <ShortName> Note 13 - Income Taxes </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 20 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R21.htm </HtmlFileName> |
| | | <LongName> 020 - Disclosure - Note 14 - Net Income Per Common Share </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-14-net-income-per-common-share </Role> |
| | | <ShortName> Note 14 - Net Income Per Common Share </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 21 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R22.htm </HtmlFileName> |
| | | <LongName> 021 - Disclosure - Note 15 - Commitments and Contingencies </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-15-commitments-and-contingencies </Role> |
| | | <ShortName> Note 15 - Commitments and Contingencies </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 22 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R23.htm </HtmlFileName> |
| | | <LongName> 022 - Disclosure - Note 16 - Subsequent Events </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-16-subsequent-events </Role> |
| | | <ShortName> Note 16 - Subsequent Events </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 23 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R24.htm </HtmlFileName> |
| | | <LongName> 023 - Disclosure - Significant Accounting Policies (Policies) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-significant-accounting-policies-policies </Role> |
| | | <ShortName> Significant Accounting Policies (Policies) </ShortName> |
| | | <MenuCategory> Policies </MenuCategory> |
| | | <Position> 24 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R25.htm </HtmlFileName> |
| | | <LongName> 024 - Disclosure - Note 2 - Valu-Net Acquisition (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-2-valunet-acquisition-tables </Role> |
| | | <ShortName> Note 2 - Valu-Net Acquisition (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.cableone.net/20210331/role/statement-note-2-valunet-acquisition </ParentRole> |
| | | <Position> 25 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R26.htm </HtmlFileName> |
| | | <LongName> 025 - Disclosure - Note 3 - Revenues (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-3-revenues-tables </Role> |
| | | <ShortName> Note 3 - Revenues (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.cableone.net/20210331/role/statement-note-3-revenues- </ParentRole> |
| | | <Position> 26 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R27.htm </HtmlFileName> |
| | | <LongName> 026 - Disclosure - Note 4 - Operating Assets and Liabilities (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-4-operating-assets-and-liabilities-tables </Role> |
| | | <ShortName> Note 4 - Operating Assets and Liabilities (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.cableone.net/20210331/role/statement-note-4-operating-assets-and-liabilities </ParentRole> |
| | | <Position> 27 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R28.htm </HtmlFileName> |
| | | <LongName> 027 - Disclosure - Note 5 - Equity Investments (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-5-equity-investments-tables </Role> |
| | | <ShortName> Note 5 - Equity Investments (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.cableone.net/20210331/role/statement-note-5-equity-investments- </ParentRole> |
| | | <Position> 28 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R29.htm </HtmlFileName> |
| | | <LongName> 028 - Disclosure - Note 6 - Property, Plant and Equipment (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-6-property-plant-and-equipment-tables </Role> |
| | | <ShortName> Note 6 - Property, Plant and Equipment (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.cableone.net/20210331/role/statement-note-6-property-plant-and-equipment </ParentRole> |
| | | <Position> 29 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R30.htm </HtmlFileName> |
| | | <LongName> 029 - Disclosure - Note 7 - Goodwill and Intangible Assets (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-7-goodwill-and-intangible-assets-tables </Role> |
| | | <ShortName> Note 7 - Goodwill and Intangible Assets (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.cableone.net/20210331/role/statement-note-7-goodwill-and-intangible-assets </ParentRole> |
| | | <Position> 30 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R31.htm </HtmlFileName> |
| | | <LongName> 030 - Disclosure - Note 8 - Debt (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-8-debt-tables </Role> |
| | | <ShortName> Note 8 - Debt (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.cableone.net/20210331/role/statement-note-8-debt </ParentRole> |
| | | <Position> 31 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R32.htm </HtmlFileName> |
| | | <LongName> 031 - Disclosure - Note 9 - Interest Rate Swaps (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-9-interest-rate-swaps-tables </Role> |
| | | <ShortName> Note 9 - Interest Rate Swaps (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.cableone.net/20210331/role/statement-note-9-interest-rate-swaps </ParentRole> |
| | | <Position> 32 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R33.htm </HtmlFileName> |
| | | <LongName> 032 - Disclosure - Note 10 - Fair Value Measurements (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-10-fair-value-measurements-tables </Role> |
| | | <ShortName> Note 10 - Fair Value Measurements (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.cableone.net/20210331/role/statement-note-10-fair-value-measurements </ParentRole> |
| | | <Position> 33 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R34.htm </HtmlFileName> |
| | | <LongName> 033 - Disclosure - Note 12 - Equity-based Compensation (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-12-equitybased-compensation-tables </Role> |
| | | <ShortName> Note 12 - Equity-based Compensation (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.cableone.net/20210331/role/statement-note-12-equitybased-compensation </ParentRole> |
| | | <Position> 34 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R35.htm </HtmlFileName> |
| | | <LongName> 034 - Disclosure - Note 14 - Net Income Per Common Share (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-14-net-income-per-common-share-tables </Role> |
| | | <ShortName> Note 14 - Net Income Per Common Share (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.cableone.net/20210331/role/statement-note-14-net-income-per-common-share </ParentRole> |
| | | <Position> 35 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R36.htm </HtmlFileName> |
| | | <LongName> 035 - Disclosure - Note 1 - Description of Business and Basis of Presentation (Details Textual) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-1-description-of-business-and-basis-of-presentation-details-textual </Role> |
| | | <ShortName> Note 1 - Description of Business and Basis of Presentation (Details Textual) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.cableone.net/20210331/role/statement-note-1-description-of-business-and-basis-of-presentation </ParentRole> |
| | | <Position> 36 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R37.htm </HtmlFileName> |
| | | <LongName> 036 - Disclosure - Note 2 - Valu-Net Acquisition (Details Textual) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-2-valunet-acquisition-details-textual </Role> |
| | | <ShortName> Note 2 - Valu-Net Acquisition (Details Textual) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.cableone.net/20210331/role/statement-note-2-valunet-acquisition-tables </ParentRole> |
| | | <Position> 37 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R38.htm </HtmlFileName> |
| | | <LongName> 037 - Disclosure - Note 2 - Valu-Net Acquisition - Identifiable Intangible Assets Acquired (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-2-valunet-acquisition-identifiable-intangible-assets-acquired-details </Role> |
| | | <ShortName> Note 2 - Valu-Net Acquisition - Identifiable Intangible Assets Acquired (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 38 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R39.htm </HtmlFileName> |
| | | <LongName> 038 - Disclosure - Note 3 - Revenues (Details Textual) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-3-revenues-details-textual </Role> |
| | | <ShortName> Note 3 - Revenues (Details Textual) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.cableone.net/20210331/role/statement-note-3-revenues-tables </ParentRole> |
| | | <Position> 39 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R40.htm </HtmlFileName> |
| | | <LongName> 039 - Disclosure - Note 3 - Revenues - Revenues by Product Line (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-3-revenues-revenues-by-product-line-details </Role> |
| | | <ShortName> Note 3 - Revenues - Revenues by Product Line (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 40 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R41.htm </HtmlFileName> |
| | | <LongName> 040 - Disclosure - Note 4 - Operating Assets and Liabilities (Details Textual) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-4-operating-assets-and-liabilities-details-textual </Role> |
| | | <ShortName> Note 4 - Operating Assets and Liabilities (Details Textual) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.cableone.net/20210331/role/statement-note-4-operating-assets-and-liabilities-tables </ParentRole> |
| | | <Position> 41 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R42.htm </HtmlFileName> |
| | | <LongName> 041 - Disclosure - Note 4 - Operating Assets and Liabilities - Summary of Accounts Receivable (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-4-operating-assets-and-liabilities-summary-of-accounts-receivable-details </Role> |
| | | <ShortName> Note 4 - Operating Assets and Liabilities - Summary of Accounts Receivable (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 42 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R43.htm </HtmlFileName> |
| | | <LongName> 042 - Disclosure - Note 4 - Operating Assets and Liabilities - Allowance for Doubtful Accounts (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-4-operating-assets-and-liabilities-allowance-for-doubtful-accounts-details </Role> |
| | | <ShortName> Note 4 - Operating Assets and Liabilities - Allowance for Doubtful Accounts (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 43 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R44.htm </HtmlFileName> |
| | | <LongName> 043 - Disclosure - Note 4 - Operating Assets and Liabilities - Prepaid and Other Current Assets (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-4-operating-assets-and-liabilities-prepaid-and-other-current-assets-details </Role> |
| | | <ShortName> Note 4 - Operating Assets and Liabilities - Prepaid and Other Current Assets (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 44 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R45.htm </HtmlFileName> |
| | | <LongName> 044 - Disclosure - Note 4 - Operating Assets and Liabilities - Other Noncurrent Assets (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-4-operating-assets-and-liabilities-other-noncurrent-assets-details </Role> |
| | | <ShortName> Note 4 - Operating Assets and Liabilities - Other Noncurrent Assets (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 45 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R46.htm </HtmlFileName> |
| | | <LongName> 045 - Disclosure - Note 4 - Operating Assets and Liabilities - Accounts Payable and Accrued Liabilities (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-4-operating-assets-and-liabilities-accounts-payable-and-accrued-liabilities-details </Role> |
| | | <ShortName> Note 4 - Operating Assets and Liabilities - Accounts Payable and Accrued Liabilities (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 46 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R47.htm </HtmlFileName> |
| | | <LongName> 046 - Disclosure - Note 4 - Operating Assets and Liabilities - Other Noncurrent Liabilities (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-4-operating-assets-and-liabilities-other-noncurrent-liabilities-details </Role> |
| | | <ShortName> Note 4 - Operating Assets and Liabilities - Other Noncurrent Liabilities (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 47 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R48.htm </HtmlFileName> |
| | | <LongName> 047 - Disclosure - Note 5 - Equity Investments (Details Textual) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-5-equity-investments-details-textual </Role> |
| | | <ShortName> Note 5 - Equity Investments (Details Textual) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.cableone.net/20210331/role/statement-note-5-equity-investments-tables </ParentRole> |
| | | <Position> 48 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R49.htm </HtmlFileName> |
| | | <LongName> 048 - Disclosure - Note 5 - Equity Investments - Carrying Value of Equity Method Investments Without Determinable Fair Values (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-5-equity-investments-carrying-value-of-equity-method-investments-without-determinable-fair-values-details </Role> |
| | | <ShortName> Note 5 - Equity Investments - Carrying Value of Equity Method Investments Without Determinable Fair Values (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 49 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R50.htm </HtmlFileName> |
| | | <LongName> 049 - Disclosure - Note 5 - Equity Investments - Equity Method Investment Income (Losses) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-5-equity-investments-equity-method-investment-income-losses-details </Role> |
| | | <ShortName> Note 5 - Equity Investments - Equity Method Investment Income (Losses) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 50 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R51.htm </HtmlFileName> |
| | | <LongName> 050 - Disclosure - Note 6 - Property, Plant and Equipment (Details Textual) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-6-property-plant-and-equipment-details-textual </Role> |
| | | <ShortName> Note 6 - Property, Plant and Equipment (Details Textual) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.cableone.net/20210331/role/statement-note-6-property-plant-and-equipment-tables </ParentRole> |
| | | <Position> 51 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R52.htm </HtmlFileName> |
| | | <LongName> 051 - Disclosure - Note 6 - Property, Plant and Equipment - Schedule of Property, Plant and Equipment (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-6-property-plant-and-equipment-schedule-of-property-plant-and-equipment-details </Role> |
| | | <ShortName> Note 6 - Property, Plant and Equipment - Schedule of Property, Plant and Equipment (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 52 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R53.htm </HtmlFileName> |
| | | <LongName> 052 - Disclosure - Note 7 - Goodwill and Intangible Assets (Details Textual) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-7-goodwill-and-intangible-assets-details-textual </Role> |
| | | <ShortName> Note 7 - Goodwill and Intangible Assets (Details Textual) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.cableone.net/20210331/role/statement-note-7-goodwill-and-intangible-assets-tables </ParentRole> |
| | | <Position> 53 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R54.htm </HtmlFileName> |
| | | <LongName> 053 - Disclosure - Note 7 - Goodwill and Intangible Assets - Intangible Assets (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-7-goodwill-and-intangible-assets-intangible-assets-details </Role> |
| | | <ShortName> Note 7 - Goodwill and Intangible Assets - Intangible Assets (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 54 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R55.htm </HtmlFileName> |
| | | <LongName> 054 - Disclosure - Note 7 - Goodwill and Intangible Assets - Amortization of Intangible Assets (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-7-goodwill-and-intangible-assets-amortization-of-intangible-assets-details </Role> |
| | | <ShortName> Note 7 - Goodwill and Intangible Assets - Amortization of Intangible Assets (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 55 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R56.htm </HtmlFileName> |
| | | <LongName> 055 - Disclosure - Note 8 - Debt (Details Textual) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-8-debt-details-textual </Role> |
| | | <ShortName> Note 8 - Debt (Details Textual) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.cableone.net/20210331/role/statement-note-8-debt-tables </ParentRole> |
| | | <Position> 56 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R57.htm </HtmlFileName> |
| | | <LongName> 056 - Disclosure - Note 8 - Debt - Schedule of Long-term Debt (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-8-debt-schedule-of-longterm-debt-details </Role> |
| | | <ShortName> Note 8 - Debt - Schedule of Long-term Debt (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 57 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R58.htm </HtmlFileName> |
| | | <LongName> 057 - Disclosure - Note 8 - Debt - Summary of Term Loans (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-8-debt-summary-of-term-loans-details </Role> |
| | | <ShortName> Note 8 - Debt - Summary of Term Loans (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 58 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R59.htm </HtmlFileName> |
| | | <LongName> 058 - Disclosure - Note 8 - Debt - Schedule of Convertible Notes (Details) </LongName> |
| | | <ReportType> Notes </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-8-debt-schedule-of-convertible-notes-details </Role> |
| | | <ShortName> Note 8 - Debt - Schedule of Convertible Notes (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 59 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R60.htm </HtmlFileName> |
| | | <LongName> 059 - Disclosure - Note 8 - Debt - Unamortized Debt Issuance Costs (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-8-debt-unamortized-debt-issuance-costs-details </Role> |
| | | <ShortName> Note 8 - Debt - Unamortized Debt Issuance Costs (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 60 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R61.htm </HtmlFileName> |
| | | <LongName> 060 - Disclosure - Note 8 - Debt - Future Maturities (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-8-debt-future-maturities-details </Role> |
| | | <ShortName> Note 8 - Debt - Future Maturities (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 61 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R62.htm </HtmlFileName> |
| | | <LongName> 061 - Disclosure - Note 9 - Interest Rate Swaps - Interest Rate Swap Agreements (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-9-interest-rate-swaps-interest-rate-swap-agreements-details </Role> |
| | | <ShortName> Note 9 - Interest Rate Swaps - Interest Rate Swap Agreements (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 62 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R63.htm </HtmlFileName> |
| | | <LongName> 062 - Disclosure - Note 9 - Interest Rate Swaps - Interest Rate Swaps on the Condensed Consolidated Balance Sheets and Statements of Operations and Comprehensive Income (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-9-interest-rate-swaps-interest-rate-swaps-on-the-condensed-consolidated-balance-sheets-and-statements-of-operations-and-comprehensive-income-details </Role> |
| | | <ShortName> Note 9 - Interest Rate Swaps - Interest Rate Swaps on the Condensed Consolidated Balance Sheets and Statements of Operations and Comprehensive Income (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 63 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R64.htm </HtmlFileName> |
| | | <LongName> 063 - Disclosure - Note 10 - Fair Value Measurements - Carrying Amounts and Fair Values (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-10-fair-value-measurements-carrying-amounts-and-fair-values-details </Role> |
| | | <ShortName> Note 10 - Fair Value Measurements - Carrying Amounts and Fair Values (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 64 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R65.htm </HtmlFileName> |
| | | <LongName> 064 - Disclosure - Note 10 - Fair Value Measurements - Assumptions Used to Determine the Fair Value of the Net Options (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-10-fair-value-measurements-assumptions-used-to-determine-the-fair-value-of-the-net-options-details </Role> |
| | | <ShortName> Note 10 - Fair Value Measurements - Assumptions Used to Determine the Fair Value of the Net Options (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 65 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R66.htm </HtmlFileName> |
| | | <LongName> 065 - Disclosure - Note 11 - Stockholders' Equity (Details Textual) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-11-stockholders-equity-details-textual </Role> |
| | | <ShortName> Note 11 - Stockholders' Equity (Details Textual) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.cableone.net/20210331/role/statement-note-11-stockholders-equity </ParentRole> |
| | | <Position> 66 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R67.htm </HtmlFileName> |
| | | <LongName> 066 - Disclosure - Note 12 - Equity-based Compensation (Details Textual) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-12-equitybased-compensation-details-textual </Role> |
| | | <ShortName> Note 12 - Equity-based Compensation (Details Textual) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.cableone.net/20210331/role/statement-note-12-equitybased-compensation-tables </ParentRole> |
| | | <Position> 67 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R68.htm </HtmlFileName> |
| | | <LongName> 067 - Disclosure - Note 12 - Equity-based Compensation - Compensation Expense (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-12-equitybased-compensation-compensation-expense-details </Role> |
| | | <ShortName> Note 12 - Equity-based Compensation - Compensation Expense (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 68 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R69.htm </HtmlFileName> |
| | | <LongName> 068 - Disclosure - Note 12 - Equity-based Compensation - Restricted Stock (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-12-equitybased-compensation-restricted-stock-details </Role> |
| | | <ShortName> Note 12 - Equity-based Compensation - Restricted Stock (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 69 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R70.htm </HtmlFileName> |
| | | <LongName> 069 - Disclosure - Note 12 - Equity-based Compensation - Stock Appreciation Rights (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-12-equitybased-compensation-stock-appreciation-rights-details </Role> |
| | | <ShortName> Note 12 - Equity-based Compensation - Stock Appreciation Rights (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 70 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R71.htm </HtmlFileName> |
| | | <LongName> 070 - Disclosure - Note 12 - Equity-based Compensation - Stock Appreciation Rights, Fair Value Assumptions (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-12-equitybased-compensation-stock-appreciation-rights-fair-value-assumptions-details </Role> |
| | | <ShortName> Note 12 - Equity-based Compensation - Stock Appreciation Rights, Fair Value Assumptions (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 71 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R72.htm </HtmlFileName> |
| | | <LongName> 071 - Disclosure - Note 13 - Income Taxes (Details Textual) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-13-income-taxes-details-textual </Role> |
| | | <ShortName> Note 13 - Income Taxes (Details Textual) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.cableone.net/20210331/role/statement-note-13-income-taxes- </ParentRole> |
| | | <Position> 72 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R73.htm </HtmlFileName> |
| | | <LongName> 072 - Disclosure - Note 14 - Net Income Per Common Share (Details Textual) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-14-net-income-per-common-share-details-textual </Role> |
| | | <ShortName> Note 14 - Net Income Per Common Share (Details Textual) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.cableone.net/20210331/role/statement-note-14-net-income-per-common-share-tables </ParentRole> |
| | | <Position> 73 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R74.htm </HtmlFileName> |
| | | <LongName> 073 - Disclosure - Note 14 - Net Income Per Common Share - Computation of Basic and Diluted Earnings Per Share (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-14-net-income-per-common-share-computation-of-basic-and-diluted-earnings-per-share-details </Role> |
| | | <ShortName> Note 14 - Net Income Per Common Share - Computation of Basic and Diluted Earnings Per Share (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 74 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R75.htm </HtmlFileName> |
| | | <LongName> 074 - Disclosure - Note 15 - Commitments and Contingencies (Details Textual) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-15-commitments-and-contingencies-details-textual </Role> |
| | | <ShortName> Note 15 - Commitments and Contingencies (Details Textual) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.cableone.net/20210331/role/statement-note-15-commitments-and-contingencies </ParentRole> |
| | | <Position> 75 </Position> |
| | | </Report> |
| | <Report instance="cabo20210331_10q.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R76.htm </HtmlFileName> |
| | | <LongName> 075 - Disclosure - Note 16 - Subsequent Events (Details Textual) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.cableone.net/20210331/role/statement-note-16-subsequent-events-details-textual </Role> |
| | | <ShortName> Note 16 - Subsequent Events (Details Textual) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.cableone.net/20210331/role/statement-note-16-subsequent-events </ParentRole> |
| | | <Position> 76 </Position> |
| | | </Report> |
| | <Report> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <LongName> All Reports </LongName> |
| | | <ReportType> Book </ReportType> |
| | | <ShortName> All Reports </ShortName> |
| | | </Report> |
| | </MyReports> |
| <InputFiles> |
| | <File doctype="10-Q" original="cabo20210331_10q.htm"> cabo20210331_10q.htm </File> |
| | <File> cabo-20210331.xsd </File> |
| | <File> cabo-20210331_cal.xml </File> |
| | <File> cabo-20210331_def.xml </File> |
| | <File> cabo-20210331_lab.xml </File> |
| | <File> cabo-20210331_pre.xml </File> |
| | <File> ex_244910.htm </File> |
| | <File> ex_244911.htm </File> |
| | <File> ex_244912.htm </File> |
| | <File> ex_244913.htm </File> |
| | </InputFiles> |
| <SupplementalFiles> |
| | <File> logo.jpg </File> |
| | </SupplementalFiles> |
| <BaseTaxonomies> |
| | <BaseTaxonomy> http://fasb.org/us-gaap/2020-01-31 </BaseTaxonomy> |
| | <BaseTaxonomy> http://fasb.org/srt/2020-01-31 </BaseTaxonomy> |
| | <BaseTaxonomy> http://xbrl.sec.gov/dei/2019-01-31 </BaseTaxonomy> |
| | </BaseTaxonomies> |
| <HasPresentationLinkbase> true </HasPresentationLinkbase> |
| <HasCalculationLinkbase> true </HasCalculationLinkbase> |
| </FilingSummary> |