Annual report pursuant to Section 13 and 15(d)

Cover Page

Cover Page - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Mar. 01, 2021
Jun. 30, 2020
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2020    
Current Fiscal Year End Date --12-31    
Document Transition Report false    
Entity File Number 001-36724    
Entity Registrant Name Joint Corp    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 90-0544160    
Entity Address, Address Line One 16767 North 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    
Title of 12(b) Security Common Stock, $0.001 Par Value Per Share    
Trading Symbol JYNT    
Security Exchange Name NASDAQ    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Non-accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company false    
Auditor Attestation Flag false    
Entity Shell Company false    
Entity Public Float     $ 205.8
Entity Common Stock, Shares Outstanding   14,139,891  
Documents Incorporated by Reference Portions of the registrant's Proxy Statement relating to its 2021 Annual Meeting of Stockholders, to be filed with the Securities and Exchange Commission (“SEC”) pursuant to Regulation 14A within 120 days after the registrant’s fiscal year ended December 31, 2020, are incorporated by reference in Part III of this Form 10-K.    
Entity Central Index Key 0001612630    
Document Fiscal Year Focus 2020    
Document Fiscal Period Focus FY    
Amendment Flag false