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Stockholders' Equity (Details) (Equity Incentive Plan [Member]) | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012
Equity Incentive Plan [Member] |  |
Class of Stock [Line Items] |  |
Reserved but unissued shares under the Equity Incentive Plan, Opening | 480,260 | 140,625
Increases in the number of authorized shares under the Equity Incentive Plan | 5,866 | 360,434
Grants of stock options | (206,390) | 0
Stock option forfeitures | 0 | 0
Stock grants | (30,000) | (83,299)
Stock grant forfeitures | 0 | 62,500
Reserved but unissued shares under the Equity Incentive Plan, Ending | 249,736 | 480,260

X
- Definition The increase in number of authorized shares under the plan during the period. + References No definition available. + Details
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X
- Definition The number of shares under options that were cancelled, expired, exchanged during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan. + References No definition available. + Details
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Namespace Prefix: | clir_
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Balance Type: | na
Period Type: | duration

X
- Definition "The number of stock grants forfeited during the period." + References No definition available. + Details
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Namespace Prefix: | clir_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of stock grants during the period. + References No definition available. + Details
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Namespace Prefix: | clir_
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- Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
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Period Type: | duration

X
- Definition Gross number of share options (or share units) granted during the period. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
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X
- Definition Number of options outstanding, including both vested and non-vested options. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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Period Type: | instant