XML 35 R32.htm IDEA: XBRL DOCUMENT v3.20.1

Summary of Significant Accounting Policies - Research and Development (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Summary of Significant Accounting Policies
Funds received	$ 108,000	$ 44,000

X

- Definition

Amount provide funding of research and development costs over periods

+ References

No definition available.

+ Details

Name:	clir_FundsReceived
Namespace Prefix:	clir_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_AccountingPoliciesAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration