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Balance Sheets (Parentheticals) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Common stock, par value (in dollars per share)	$ 0us-gaap_CommonStockParOrStatedValuePerShare	$ 0us-gaap_CommonStockParOrStatedValuePerShare
Common stock, shares authorized (in shares)	3,000,000us-gaap_CommonStockSharesAuthorized	3,000,000us-gaap_CommonStockSharesAuthorized
Common stock, shares issued (in shares)	2,100,000us-gaap_CommonStockSharesIssued	2,100,000us-gaap_CommonStockSharesIssued
Treasury stock, shares (in shares)	157,505us-gaap_TreasuryStockShares	157,505us-gaap_TreasuryStockShares
Timber Properties [Member]
Accumulated depreciation	$ 803,189us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_TimberPropertiesMember	$ 742,248us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_TimberPropertiesMember
Building and Equipment [Member]
Accumulated depreciation	$ 90,432us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment / us-gaap_PropertyPlantAndEquipmentByTypeAxis = ckx_BuildingAndEquipmentMember	$ 84,191us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment / us-gaap_PropertyPlantAndEquipmentByTypeAxis = ckx_BuildingAndEquipmentMember

X

- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (c)

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.14)

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 14

-Article 5

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X

- Definition

Face amount or stated value per share of common stock.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

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X

- Definition

The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

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- Definition

Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

+ References

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- Definition

Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends.

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X

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