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Document And Entity Information
Oct. 01, 2019
Document Information [Line Items]  
Entity Registrant Name Cable One, Inc.
Document Type 8-K/A
Document Period End Date Oct. 01, 2019
Entity Incorporation, State or Country Code DE
Entity File Number 001-36863
Entity Tax Identification Number 13-3060083
Entity Address, Address Line One 210 E. Earll Drive
Entity Address, City or Town Phoenix
Entity Address, State or Province AZ
Entity Address, Postal Zip Code 85012
City Area Code 602
Local Phone Number 364-6000
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common Stock
Trading Symbol CABO
Security Exchange Name NYSE
Entity Emerging Growth Company false
Amendment Description Form 8-K/A date of report 10-01-19
Amendment Flag true
Entity Central Index Key 0001632127