v3.26.1
Cover Page - $ / shares
6 Months Ended
Jun. 30, 2026
Aug. 03, 2026
Dec. 31, 2025
Cover [Abstract]      
Document Type 10-Q    
Document Quarterly Report true    
Document Period End Date Jun. 30, 2026    
Document Transition Report false    
Entity File Number 001-11590    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 51-0064146    
Entity Address, Address Line One 500 Energy Lane    
Entity Address, City or Town Dover    
Entity Address, State or Province DE    
Entity Address, Postal Zip Code 19901    
City Area Code 302    
Local Phone Number 734-6799    
Title of 12(b) Security Common Stock - par value per share $0.4867    
Trading Symbol CPK    
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    
Common stock, par value (in dollars per share) $ 0.4867   $ 0.4867
Entity Common Stock, Shares Outstanding   24,106,455  
Entity Registrant Name CHESAPEAKE UTILITIES CORP    
Entity Central Index Key 0000019745    
Current Fiscal Year End Date --12-31    
Document Fiscal Year Focus 2026    
Document Fiscal Period Focus Q2    
Amendment Flag false    
Security Exchange Name NYSE