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Note 1 - Significant Accounting Policies and Recent Accounting Pronouncements (Tables)

6 Months Ended

Jun. 30, 2019

Notes Tables

Property, Plant and Equipment, Useful Life [Table Text Block]

Furniture and equipment (years)	5	-	7
Land improvements (years)		15

X

- Definition

Tabular disclosure of the useful life of physical assets used in the normal conduct of business and not intended for resale.

+ References

No definition available.

+ Details

Name:	ckx_PropertyPlantAndEquipmentUsefulLifeTableTextBlock
Namespace Prefix:	ckx_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_TableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration