| Document and Entity Information | Mar. 19, 2024 |
| Document And Entity Information [Line Items] | |
| Document Type | 8-K |
| Document Period End Date | Mar. 19, 2024 |
| Entity Registrant Name | CURIOSITYSTREAM INC. |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-39139 |
| 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 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
| Amendment Flag | false |
| Entity Central Index Key | 0001776909 |
| Common Stock Par Value 0.0001 | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Common Stock, par value $0.0001 |
| Trading Symbol | CURI |
| Security Exchange Name | NASDAQ |
| Warrants Each Exercisable For One Share Of Common Stock At An Exercise Price Of 11.50 Per Share | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Warrants, each exercisable for one share of Common stock at an exercise price of $11.50 per share |
| Trading Symbol | CURIW |
| Security Exchange Name | NASDAQ |
