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Commitments and Contingencies Gain Contingencies (Details) (USD $) In Thousands, unless otherwise specified | 1 Months Ended |  |
--- | --- | --- | ---
Feb. 28, 2012 | Dec. 31, 2014 | Jan. 31, 2007 principals
Other Litigation |  |  |
Gain Contingencies |  |  |
Loss contingency, estimate of possible loss |  | $ 1,000 us-gaap_LossContingencyEstimateOfPossibleLoss / us-gaap_LossContingenciesByNatureOfContingencyAxis = clro_OtherLitigationMember |
Misappropriation of Trade Secrets [Member] | Biamp |  |  |
Gain Contingencies |  |  |
Gain contingency, number of defendents |  |  | 2 clro_GainContingencyNumberOfDefendents / clro_DefendentAxis = clro_BiampMember / us-gaap_GainContingenciesByNatureAxis = clro_MisappropriationOfTradeSecretsMember
Gain (loss) related to litigation settlement | 3,860 us-gaap_GainLossRelatedToLitigationSettlement / clro_DefendentAxis = clro_BiampMember / us-gaap_GainContingenciesByNatureAxis = clro_MisappropriationOfTradeSecretsMember |  |
Misappropriation of Trade Secrets [Member] | Other Defendents |  |  |
Gain Contingencies |  |  |
Gain contingency, unrecorded amount |  | 7,658 us-gaap_GainContingencyUnrecordedAmount / clro_DefendentAxis = clro_OtherDefendentsMember / us-gaap_GainContingenciesByNatureAxis = clro_MisappropriationOfTradeSecretsMember |
Gain (loss) related to litigation settlement | $ 250 us-gaap_GainLossRelatedToLitigationSettlement / clro_DefendentAxis = clro_OtherDefendentsMember / us-gaap_GainContingenciesByNatureAxis = clro_MisappropriationOfTradeSecretsMember |  |

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- Definition Gain Contingency, Number of Defendents + References No definition available. + Details
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- Definition The amount or range of possible amounts of gain that could be realized upon the resolution of a contingency. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6397426&loc=d3e17499-108355 + Details
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- Definition Amount of gain (loss) recognized in settlement of litigation and insurance claims. Excludes claims within an insurance entity's normal claims settlement process. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349 + Details
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- Definition Reflects the estimated amount of loss from the specified contingency as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 9 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14557-108349 + Details
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- Details
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