| Cover | Mar. 29, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Mar. 29, 2021 |
| Entity File Number | 001-36724 |
| Entity Registrant Name | The Joint Corp. |
| Entity Central Index Key | 0001612630 |
| Entity Tax Identification Number | 90-0544160 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 16767 N. Perimeter Drive |
| Entity Address, Address Line Two | Suite 110 |
| Entity Address, City or Town | Scottsdale |
| Entity Address, State or Province | AZ |
| Entity Address, Postal Zip Code | 85260 |
| City Area Code | 480 |
| Local Phone Number | 245-5960 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, $0.001 Par Value Per Share |
| Trading Symbol | JYNT |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
