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Income Taxes Income Tax Rates (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
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Mar. 31, 2015 | Dec. 31, 2014
Income Tax Rate Disclosures [Abstract] |  |
Effective tax rate, forecasted | 35.80%clro_EffectiveTaxRateForecasted |
Effective Income Tax Rate, Continuing Operations, Forecasted Increase (Decrease) in Rate | 3.80%clro_EffectiveIncomeTaxRateContinuingOperationsForecastedIncreaseDecreaseInRate |
Effective Income Tax Rate, Continuing Operations |  | 32.00%us-gaap_EffectiveIncomeTaxRateContinuingOperations
Effective tax rate, including loss jurisdictions | 36.10%clro_EffectiveTaxRateIncludingLossJurisdictions |
Unrecognized Tax Benefits that Would Impact Effective Tax Rate | $ 2 us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate |
Effective Tax Rate, After Discreet Benefits | 36.50%clro_EffectiveTaxRateAfterDiscreetBenefits |

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- Definition This tag represents the increase or decrease between the prior period effective income tax rate and the current period forecasted effective income tax rate. + References No definition available. + Details
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- Definition Effective Tax Rate, After Discreet Benefits + References No definition available. + Details
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- Definition The forecasted effective income tax rate for the period. + References No definition available. + Details
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- Definition The forecasted effective tax rate which includes loss jurisdiction for which no benefit from forecasted current year losses is anticipated. + References No definition available. + Details
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- Details
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- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)(2)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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- Definition The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + Details
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