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Cover Page - USD ($)
12 Months Ended
Dec. 31, 2019
Feb. 26, 2020
Jun. 30, 2019
Cover page.      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2019    
Document Transition Report false    
Entity File Number 001-34693    
Entity Registrant Name CHATHAM LODGING TRUST    
Entity Incorporation, State or Country Code MD    
Entity Tax Identification Number 27-1200777    
Entity Address, Address Line One 222 Lakeview Avenue, Suite 200    
Entity Address, City or Town West Palm Beach    
Entity Address, State or Province FL    
Entity Address, Postal Zip Code 33401    
City Area Code 561    
Local Phone Number 802-4477    
Title of 12(b) Security Common Shares of Beneficial Interest, par value $0.01 per share    
Trading Symbol CLDT    
Security Exchange Name NYSE    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Public Float     $ 856,939,318
Entity Common Stock, Shares Outstanding (in shares)   46,956,110  
Current Fiscal Year End Date --12-31    
Document Fiscal Year Focus 2019    
Document Fiscal Period Focus FY    
Amendment Flag false    
Entity Central Index Key 0001476045