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Represents the charges incurred on ceasing of mining operation

No definition available.

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Represents the number of customers who accounted for more than specified percentage of total sales.

No definition available.

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Represents the number of customers who accounted for more than specified percentage of accounts receivable.

No definition available.

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No definition available.

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Represents the unfunded liabilities recognized in the balance sheet that is associated with the Supplemental Profit Sharing Plan.

No definition available.

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Represents the length of fiscal year of the reporting entity.

No definition available.

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No definition available.

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Represents the number of performance obligations for installation service contracts.

No definition available.

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Represents payment terms in number of days after invoice is billed to the customer.

No definition available.

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This element represents the amount receivable from the company's insurance carrier for recorded losses accrued for claims in excess of the deductible amounts. The receivable from insurance has been recorded for the full amount of the insured losses.

No definition available.

Name:	cuo_ReceivablesForInsuredLosses
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n/a

No definition available.

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Current portion of reclamation reserve to restore a mining or drilling site to the condition agreed upon within the mining or drilling contract.

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No definition available.

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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No definition available.

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Amount as of the balance sheet date of the aggregate standard product warranty liability. Does not include the balance for the extended product warranty liability.

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Amount of decrease in the standard product warranty accrual from payments made in cash or in kind to satisfy claims under the terms of the standard product warranty. Excludes extended product warranties.

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Amount of increase in the standard product warranty accrual from warranties issued. Excludes extended product warranties.

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Namespace Prefix:
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Name:	srt_RangeAxis=srt_MinimumMember
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