Document And Entity Information
Jun. 07, 2022
Document Information [Line Items]  
Entity, Registrant Name HARTE HANKS, INC.
Document, Type 8-K
Document, Period End Date Jun. 07, 2022
Entity, Incorporation, State or Country Code DE
Entity, File Number 1-7120
Entity, Tax Identification Number 74-1677284
Entity, Address, Address Line One 2800 Wells Branch Parkway
Entity, Address, City or Town Austin
Entity, Address, State or Province TX
Entity, Address, Postal Zip Code 78728
City Area Code 512
Local Phone Number 434-1100
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 HHS
Security Exchange Name NASDAQ
Entity, Emerging Growth Company false
Amendment Flag false
Entity, Central Index Key 0000045919