XML 10 R1.htm IDEA: XBRL DOCUMENT v3.5.0.2
Document And Entity Information
 9 Months Ended
Sep. 30, 2016
shares
Document Information [Line Items]  
Entity Registrant Name CKX LANDS, INC.
Entity Central Index Key 0000352955
Trading Symbol ckx
Current Fiscal Year End Date --12-31
Entity Filer Category Smaller Reporting Company
Entity Current Reporting Status Yes
Entity Voluntary Filers No
Entity Well-known Seasoned Issuer No
Entity Common Stock, Shares Outstanding (in shares) 1,942,495
Document Type 10-Q
Document Period End Date Sep. 30, 2016
Document Fiscal Year Focus 2016
Document Fiscal Period Focus Q3
Amendment Flag false