v3.26.1
Document And Entity Information
Aug. 05, 2026
Cover [Abstract]  
Document Type 8-K
Amendment Flag false
Current Fiscal Year End Date --12-31
Document Period End Date Aug. 05, 2026
Entity Registrant Name Onterris, Inc.
Entity Central Index Key 0001643615
Entity Emerging Growth Company false
Entity File Number 001-39394
Entity Incorporation, State or Country Code DE
Entity Tax Identification Number 46-4195044
Entity Address, Address Line One 5120 Northshore Drive
Entity Address, City or Town North Little Rock
Entity Address, State or Province AR
Entity Address, Postal Zip Code 72118
City Area Code 501
Local Phone Number 900-6400
Entity Information, Former Legal or Registered Name  
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common Stock, $0.000004 par value per share
Trading Symbol ONT
Security Exchange Name NYSE