Document And Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2024	Mar. 25, 2025	Jun. 30, 2024
Document Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2024
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	NYSE
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
ICFR Auditor Attestation Flag	false
Document Financial Statement Error Correction [Flag]	false
Entity Shell Company	false
Entity Public Float			$ 18,887,985
Entity Common Stock, Shares Outstanding (in shares)		2,027,032
Auditor Firm ID	206
Auditor Name	MaloneBailey, LLP
Auditor Location	Houston, Texas
Entity Central Index Key	0000352955
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	FY
Amendment Flag	false