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COVER - USD ($)
12 Months Ended
Dec. 31, 2022
Feb. 22, 2023
Jun. 30, 2022
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2022    
Current Fiscal Year End Date --12-31    
Document Transition Report false    
Entity File Number 001-38900    
Entity Registrant Name THE PENNANT GROUP, INC.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 83-3349931    
Entity Address, Address Line One 1675 East Riverside Drive    
Entity Address, Address Line Two Suite 150    
Entity Address, City or Town Eagle    
Entity Address, State or Province ID    
Entity Address, Postal Zip Code 83616    
City Area Code (208)    
Local Phone Number 506-6100    
Title of 12(b) Security Common Stock, par value $0.001 per share    
Trading Symbol PNTG    
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 Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Entity Shell Company false    
Entity Common Stock, Shares Outstanding   29,705,640  
Entity Public Float     $ 361,547,000
Documents Incorporated by Reference Part III of this Form 10-K incorporates information by reference from the Registrant's definitive proxy statement on Schedule 14A for the Registrant's 2023 Annual Meeting of Stockholders to be filed within 120 days after the close of the fiscal year covered by this annual report.    
Entity Central Index Key 0001766400    
Document Fiscal Year Focus 2022    
Document Fiscal Period Focus FY    
Amendment Flag false