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Condensed Consolidated Statements of Stockholders' Equity (Parenthetical) - $ / shares | 3 Months Ended
--- | ---
Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018
Condensed Consolidated Statements of Stockholders' Equity |  |  |  |  |  |
Common stock for services per share issue one | $ 1.44 | $ 1.44 | $ 1.44 | $ 3.50 | $ 3.50 | $ 3.50
Stock Issued During Period Board Services Per Share |  |  |  | 1.85 | $ 1.85 |
Stock Issued During Period Rights Offering Per Share |  |  |  | $ 2.25 |  | $ 2.25

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- Definition Per share value of common share granted (first issue) during the period for services. + References No definition available. + Details
Name: | clir_CommonStockForServicesPerShareIssueOne
Namespace Prefix: | clir_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

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- Definition The price per share of stock issued during the period for board services. + References No definition available. + Details
Name: | clir_StockIssuedDuringPeriodBoardServicesPerShare
Namespace Prefix: | clir_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

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- Definition The price per share of Stock issued during the period rights offering per share. + References No definition available. + Details
Name: | clir_StockIssuedDuringPeriodRightsOfferingPerShare
Namespace Prefix: | clir_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_StatementOfStockholdersEquityAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration