v3.26.3
Cover
Sep. 30, 2026
Cover [Abstract]  
Document Type 8-K
Amendment Flag false
Document Period End Date Sep. 30, 2026
Entity File Number 000-24379
Entity Registrant Name ATLANTICA INC.
Entity Central Index Key 0001062506
Entity Tax Identification Number 43-0976473
Entity Incorporation, State or Country Code UT
Entity Address, Address Line One c/o Richland, Gordon and Company
Entity Address, Address Line Two 11450 SE Dixie Highway
Entity Address, City or Town Hobe Sound
Entity Address, State or Province FL
Entity Address, Postal Zip Code 33455
City Area Code 772
Local Phone Number 545-9002
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Emerging Growth Company true
Elected Not To Use the Extended Transition Period false