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Business Combination, Goodwill and Intangibles Business Combinations, Consideration Paid (Details)	0 Months Ended		12 Months Ended
	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	$ 5,050,000us-gaap_PaymentsToAcquireBusinessesGross / us-gaap_BusinessAcquisitionAxis = clro_SpontaniaMember
Business Combination, Consideration Transferred		€ 3,660,000us-gaap_BusinessCombinationConsiderationTransferred1 / us-gaap_BusinessAcquisitionAxis = clro_SpontaniaMember	$ 10,477,000us-gaap_BusinessCombinationConsiderationTransferred1 / us-gaap_BusinessAcquisitionAxis = clro_SabineInc.Member	$ 8,141,000us-gaap_BusinessCombinationConsiderationTransferred1 / us-gaap_BusinessAcquisitionAxis = clro_SabineInc.Member / us-gaap_ContingentConsiderationByTypeAxis = us-gaap_CashMember	$ 1,679,000us-gaap_BusinessCombinationConsiderationTransferred1 / us-gaap_BusinessAcquisitionAxis = clro_SabineInc.Member / us-gaap_ContingentConsiderationByTypeAxis = us-gaap_RestrictedStockMember	$ 657,000us-gaap_BusinessCombinationConsiderationTransferred1 / us-gaap_BusinessAcquisitionAxis = clro_SabineInc.Member / us-gaap_ContingentConsiderationByTypeAxis = us-gaap_ReserveForEarnOutReceivableMember

X

- 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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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- 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

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