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

X

- Definition

Per share value of common share granted (first issue) during the period for services.

+ References

No definition available.

+ Details

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Namespace Prefix:	clir_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

X

- 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

X

- 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