v3.25.2
Document And Entity Information - shares
 6 Months Ended
Jun. 30, 2025
Aug. 01, 2025
Document Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2025  
Document Transition Report false  
Entity File Number 1-31905  
Entity Registrant Name CKX Lands, Inc.  
Entity Incorporation, State or Country Code LA  
Entity Tax Identification Number 72-0144530  
Entity Address, Address Line One 2417 Shell Beach Drive  
Entity Address, City or Town Lake Charles  
Entity Address, State or Province LA  
Entity Address, Postal Zip Code 70601  
City Area Code 337  
Local Phone Number 493-2399  
Title of 12(b) Security Common Stock with no par value  
Trading Symbol CKX  
Security Exchange Name NYSEAMER  
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  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding (in shares)   2,053,129
Entity Central Index Key 0000352955  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2025  
Document Fiscal Period Focus Q2  
Amendment Flag false