v3.21.2
Cover - shares
 9 Months Ended
Sep. 30, 2021
Nov. 02, 2021
Cover [Abstract]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Sep. 30, 2021  
Document Transition Report false  
Entity File Number 001-38242  
Entity Registrant Name OrthoPediatrics Corp  
Entity Incorporation, State or Country Code DE  
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 Each Class Common Stock, $0.00025 par value per share  
Trading Symbol(s) KIDS  
Name of each exchange on which registered NASDAQ  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company true  
Entity Ex Transition Period true  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   19,678,380
Document Fiscal Year Focus 2021  
Document Fiscal Period Focus Q3  
Amendment Flag false  
Entity Central Index Key 0001425450  
Current Fiscal Year End Date --12-31