| Document and Entity Information | Feb. 28, 2022 |
| Document And Entity Information [Line Items] | |
| Amendment Flag | false |
| Entity Central Index Key | 0001819404 |
| Document Type | 8-K |
| Document Period End Date | Feb. 28, 2022 |
| Entity Registrant Name | NERDY INC. |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-39595 |
| Entity Tax Identification Number | 98-1499860 |
| Entity Address, Address Line One | 101 S. Hanley Rd. |
| Entity Address, Address Line Two | Suite 300 |
| Entity Address, City or Town | St. Louis |
| Entity Address, State or Province | MO |
| Entity Address, Postal Zip Code | 63105 |
| City Area Code | (314) |
| Local Phone Number | 412-1227 |
| 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 |
| Class A Common Stock Par Value 0.0001 Per Share [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Class A common stock, par value $0.0001 per share |
| Trading Symbol | NRDY |
| Security Exchange Name | NYSE |
| Warrants Each Whole Warrant Exercisable For One Share Of Class A Common Stock At An Exercise Price Of 11.50 Per Share [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Warrants, each whole warrant exercisable for one share of Class A common stock at an exercise price of $11.50 per share |
| Trading Symbol | NRDY-WT |
| Security Exchange Name | NYSE |
