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Government Assistance (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended		12 Months Ended
	Sep. 30, 2022	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Government Assistance
Agreement, Term				10 years
Assistance received	$ 88	$ 100
Grant income received	12	24	$ 0
Department Of Energy
Government Assistance
Total award		$ 250
Research grants, research completion period		3 months
Assistance received	$ 76	$ 76

X

- Definition

Represents term of agreement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Balance Type:	na
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X

- Definition

Amount recorded as income during the period attributable to governmental assistance, such as expense reimbursement for development or research and development costs.

+ References

No definition available.

+ Details

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X

- Definition

Amount recorded as income during the period attributable to governmental grants.

+ References

No definition available.

+ Details

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Namespace Prefix:	clir_
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Balance Type:	credit
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X

- Definition

The total amount of the research grant award.

+ References

No definition available.

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Balance Type:	debit
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- Definition

The period of completion of research.

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No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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