DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION	3 Months Ended
DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION	Mar. 31, 2023
Accounting Policies [Abstract]
DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION	DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION Description of Business. Cable One is a fully integrated provider of data, video and voice services to residential and business customers in 24 Western, Midwestern and Southern U.S. states. As of March 31, 2023, Cable One provided services to more than 1.1 million residential and business customers, of which approximately 1,063,000 subscribed to data services, 167,000 subscribed to video services and 128,000 subscribed to voice services. On January 1, 2022, the Company closed a joint venture transaction in which the Company contributed certain fiber operations (including certain fiber assets of Hargray and a majority of the operations of Delta Communications, L.L.C. ("Clearwave")) (the "Clearwave Fiber Contribution") and certain unaffiliated third-party investors contributed cash to a newly formed entity, Clearwave Fiber LLC ("Clearwave Fiber"). The Company's approximately 58% investment in Clearwave Fiber was valued at $440.0 million as of the closing date. Clearwave Fiber is reported on Cable One’s balance sheet under the equity method of accounting, with the proportionate share of its net income (loss) each period reflected within Cable One's consolidated financial statements on a one quarter lag. Refer to note 4 for further details on this transaction and on the Company’s other equity investments. Basis of Presentation. The condensed consolidated financial statements and accompanying notes thereto have been prepared in accordance with: (i) generally accepted accounting principles in the United States (“GAAP”) for interim financial information; and (ii) the guidance of Rule 10-01 of Regulation S-X under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), for financial statements required to be filed with the SEC. As permitted under such guidance, certain notes and other financial information normally required by GAAP have been omitted. Management believes the condensed consolidated financial statements reflect all normal and recurring adjustments necessary for a fair statement of the Company’s financial position, results of operations and cash flows as of and for the periods presented herein. These condensed consolidated financial statements are unaudited and should be read in conjunction with the Company’s audited consolidated financial statements and the notes thereto included in the 2022 Form 10-K. The December 31, 2022 year-end balance sheet data presented herein was derived from the Company’s audited consolidated financial statements included in the 2022 Form 10-K, but does not include all disclosures required by GAAP. The Company’s interim results of operations may not be indicative of its future results. Certain reclassifications have been made to prior period amounts to conform to the current year presentation. Principles of Consolidation. The accompanying condensed consolidated financial statements include the accounts of the Company, including its subsidiaries. All intercompany accounts and transactions have been eliminated in consolidation. Segment Reporting. Accounting Standards Codification 280 - Segment Reporting requires the disclosure of factors used to identify an entity’s reportable segments. Based on the Company’s chief operating decision maker’s review and assessment of the Company’s operating performance for purposes of performance monitoring and resource allocation, the Company determined that its operations, including the decisions to allocate resources and deploy capital, are organized and managed on a consolidated basis. Accordingly, management has identified one operating segment, which is its reportable segment, under this organizational and reporting structure. Use of Estimates. The preparation of the condensed consolidated financial statements in conformity with GAAP requires management to make certain estimates and assumptions that affect the amounts reported herein. Management bases its estimates and assumptions on historical experience and on various other factors that are believed to be reasonable under the circumstances. Due to the inherent uncertainty involved in making estimates, actual results reported in future periods may be affected by changes in those estimates and underlying assumptions. Recently Adopted Accounting Pronouncements. In March 2020, the Financial Accounting Standards Board issued Accounting Standards Update (“ASU”) No. 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting. ASU 2020-04 provides optional expedients and exceptions for applying GAAP to contracts, hedging relationships and other transactions that reference LIBOR and other reference rates that are to be discontinued. The Company applied the updated guidance when it transitioned certain of its debt instruments and interest rate swaps from LIBOR to the Secured Overnight Financing Rate ("SOFR") during the first quarter of 2023. The Company will also apply the updated guidance when it transitions its one remaining LIBOR-based debt instrument to SOFR by June 30, 2023. The adoption of ASU 2020-04 did not, and will not, have a material impact on the Company's consolidated financial statements.