| Cover | Jan. 15, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Document Period End Date | Jan. 15, 2021 |
| Entity Registrant Name | OrthoPediatrics Corp. |
| Entity Central Index Key | 0001425450 |
| Amendment Flag | false |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-38242 |
| Entity Tax Identification Number | 26-1761833 |
| Entity Address, Address Line One | 2850 Frontier Drive |
| Entity Address, City or Town | Warsaw |
| Entity Address, State or Province | IN |
| Entity Address, Postal Zip Code | 46582 |
| City Area Code | 574 |
| Local Phone Number | 268-6379 |
| Title of 12(b) Security | Common Stock, $0.00025 par value per share |
| Trading Symbol | KIDS |
| Security Exchange Name | NASDAQ |
| 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 | true |
