v3.25.4
Cover Page - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Mar. 06, 2026
Jun. 30, 2025
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2025    
Current Fiscal Year End Date --12-31    
Document Transition Report false    
Entity File Number 001-39139    
Entity Registrant Name CURIOSITYSTREAM INC.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 84-1797523    
Entity Address, Address Line One 8484 Georgia Ave    
Entity Address, Address Line Two Suite 700    
Entity Address, City or Town Silver Spring    
Entity Address, State or Province MD    
Entity Address, Postal Zip Code 20910    
City Area Code 301    
Local Phone Number 755-2050    
Title of 12(b) Security Common Stock, par value $0.0001    
Trading Symbol CURI    
Security Exchange Name NASDAQ    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Non-accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag false    
Document Financial Statement Error Correction [Flag] false    
Entity Shell Company false    
Entity Public Float     $ 179.7
Entity Common Stock, Shares Outstanding   58,974,338  
Documents Incorporated by Reference
DOCUMENTS INCORPORATED BY REFERENCE
Portions of the registrant’s definitive proxy statement relating to its annual meeting of stockholders to be held in 2026 (the “2026 Annual Meeting”), expected to be filed with the Securities and Exchange Commission (the “SEC”) on or before April 29, 2026 (and, in any event, not later than 120 days after the close of our last fiscal year), are incorporated by reference into Part III of this Annual Report on Form 10-K to the extent stated herein. Except with respect to information specifically incorporated by reference in this Annual Report on Form 10-K, such proxy statement is not deemed to be filed as part hereof. 		   
Entity Central Index Key 0001776909    
Document Fiscal Year Focus 2025    
Document Fiscal Period Focus FY    
Amendment Flag false