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Fixed Assets - Operating lease (Details) - USD ($)	3 Months Ended	9 Months Ended
	Mar. 31, 2020	Sep. 30, 2020
Leases
Monthly rent expense		$ 13,500
Renewal option term		3 years
Lessee, Operating Lease, Existence of Option to Extend [true false]		true
Monthly rent expense, increase (in percent)		3.00%
Operating Leases, Rent Expense		$ 2,200
Annual rent expense, increase (in percent)		2.50%
Washington
Leases
Monthly rent expense	$ 12,000
Oklahoma
Leases
Monthly rent expense		$ 2,000
CHINA
Leases
Monthly rent expense		$ 6,000

X

- Definition

Represents monthly rent expense. Excludes triple net operating costs.

+ References

No definition available.

+ Details

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

X

- Definition

Represents percentage of Annual rent expense increase. Excludes triple net operating costs.

+ References

No definition available.

+ Details

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

X

- Definition

Represents percentage of monthly rent expense increase. Excludes triple net operating costs.

+ References

No definition available.

+ Details

Name:	clir_PercentageOperatingLeasesMonthlyRentExpenseIncrease
Namespace Prefix:	clir_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

+ References

No definition available.

+ Details

Name:	us-gaap_LeaseAndRentalExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- 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.

+ Details

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

X

- Definition

Indicates (true false) whether lessee has option to extend operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918673-209980

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:booleanItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918673-209980

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	srt_StatementGeographicalAxis=stpr_WA
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_StatementGeographicalAxis=stpr_OK
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_StatementGeographicalAxis=country_CN
Namespace Prefix:
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