Cover
Apr. 07, 2023
Cover [Abstract]  
Document Type 8-K
Amendment Flag false
Document Period End Date Apr. 07, 2023
Entity File Number 001-38869
Entity Registrant Name HOOKIPA PHARMA INC.
Entity Central Index Key 0001760542
Entity Tax Identification Number 81-5395687
Entity Incorporation, State or Country Code DE
Entity Address, Address Line One 350 Fifth Avenue, 72nd Floor
Entity Address, Address Line Two Suite 7240
Entity Address, City or Town New York
Entity Address, State or Province NY
Entity Address, Postal Zip Code 10018
City Area Code +43
Local Phone Number 1 890 63 60
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common stock, $0.0001 par value per share
Trading Symbol HOOK
Security Exchange Name NASDAQ
Entity Emerging Growth Company true
Elected Not To Use the Extended Transition Period true