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Stockholders' Equity (Details 5) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Effect on net loss	$ 625,000	$ 771,000
Effect on net loss per share (in dollars per share)	$ 0.05	$ 0.06
Research and development [Member]
Effect on net loss	$ 112,000	$ 108,000
General and administrative [Member]
Effect on net loss	$ 513,000	$ 663,000

X

- Definition

The per share value of compensation cost and its effect on net loss per share.

+ References

No definition available.

+ Details

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Balance Type:	na
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X

- Definition

The effect of recognized share based compensation cost on net loss.

+ References

No definition available.

+ Details

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Namespace Prefix:	clir_
Data Type:	xbrli:monetaryItemType
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Period Type:	duration

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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Namespace Prefix:
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Balance Type:
Period Type: