Asset Retirement Obligation (The Significant Assumptions Used To Estimate The Obligation) (Detail) (USD $)	12 Months Ended
Dec. 31, 2014
Asset Retirement Obligation Disclosure [Line Items]
Annual inflation rate	5.54%cylu_AnnualInflationRate
Credit-adjusted risk-free rate	5.37%cylu_CreditAdjustedRiskFreeRate
Initial estimated remediation costs (undiscounted and not adjusted for inflation)	$ 200,000cylu_InitialEstimatedRemediationCosts
Estimated remediation completion date	Dec. 19, 2038
Estimated remediation cost on December 19, 2038	$ 720,000cylu_EstimatedRemediationCost

The Annual inflation rate assumptions used for estimating obligation.

No definition available.

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The Credit-adjusted risk-free rate assumptions used for estimating obligation.

No definition available.

Name:	cylu_CreditAdjustedRiskFreeRate
Namespace Prefix:	cylu_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

The Estimated remediation completion date assumptions used for estimating obligation.

No definition available.

Name:	cylu_EstimatedRemediationCompletionDate
Namespace Prefix:	cylu_
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The Estimated remediation cost assumptions used for estimating obligation.

No definition available.

Name:	cylu_EstimatedRemediationCost
Namespace Prefix:	cylu_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

The Initial estimated remediation costs (undiscounted and not adjusted for inflation) assumptions used for estimating obligation.

No definition available.

Name:	cylu_InitialEstimatedRemediationCosts
Namespace Prefix:	cylu_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant