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Business Combination, Goodwill and Intangibles Business Combinations, Consideration Paid (Details) | 0 Months Ended | 12 Months Ended
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Apr. 01, 2014 Spontania [Member] USD ($) | Apr. 01, 2014 Spontania [Member] EUR (€) | Dec. 31, 2014 Sabine, Inc. [Member] USD ($) | Dec. 31, 2014 Cash [Member] Sabine, Inc. [Member] USD ($) | Dec. 31, 2014 Restricted Stock [Member] Sabine, Inc. [Member] USD ($) | Dec. 31, 2014 Reserve for Earn-out Receivable [Member] Sabine, Inc. [Member] USD ($)
Noncash or Part Noncash Acquisitions [Line Items] |  |  |  |  |  |
Payments to Acquire Businesses, Gross | $ 5,050,000 us-gaap_PaymentsToAcquireBusinessesGross / us-gaap_BusinessAcquisitionAxis = clro_SpontaniaMember |  |  |  |  |
Business Combination, Consideration Transferred |  | € 3,660,000 us-gaap_BusinessCombinationConsiderationTransferred1 / us-gaap_BusinessAcquisitionAxis = clro_SpontaniaMember | $ 10,477,000 us-gaap_BusinessCombinationConsiderationTransferred1 / us-gaap_BusinessAcquisitionAxis = clro_SabineInc.Member | $ 8,141,000 us-gaap_BusinessCombinationConsiderationTransferred1 / us-gaap_BusinessAcquisitionAxis = clro_SabineInc.Member / us-gaap_ContingentConsiderationByTypeAxis = us-gaap_CashMember | $ 1,679,000 us-gaap_BusinessCombinationConsiderationTransferred1 / us-gaap_BusinessAcquisitionAxis = clro_SabineInc.Member / us-gaap_ContingentConsiderationByTypeAxis = us-gaap_RestrictedStockMember | $ 657,000 us-gaap_BusinessCombinationConsiderationTransferred1 / us-gaap_BusinessAcquisitionAxis = clro_SabineInc.Member / us-gaap_ContingentConsiderationByTypeAxis = us-gaap_ReserveForEarnOutReceivableMember

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- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 + Details
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- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
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