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Termination of Employment Agreement (Details Textual) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2016	Dec. 31, 2015
Loss Contingency Accrual, Provision	$ 50,000us-gaap_LossContingencyAccrualProvision
Richard F. Rutkowski [Member] | Option One [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Number of Shares	15,625us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares / us-gaap_OptionIndexedToIssuersEquityTypeAxis = clir_OptionOneMember / us-gaap_TitleOfIndividualAxis = clir_RichardFRutkowskiMember
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Weighted Average Grant Date Fair Value	$ 4.88us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedWeightedAverageGrantDateFairValue / us-gaap_OptionIndexedToIssuersEquityTypeAxis = clir_OptionOneMember / us-gaap_TitleOfIndividualAxis = clir_RichardFRutkowskiMember
Richard F. Rutkowski [Member] | Option Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Number of Shares	14,219us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares / us-gaap_OptionIndexedToIssuersEquityTypeAxis = clir_OptionTwoMember / us-gaap_TitleOfIndividualAxis = clir_RichardFRutkowskiMember
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Weighted Average Grant Date Fair Value	$ 9.90us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedWeightedAverageGrantDateFairValue / us-gaap_OptionIndexedToIssuersEquityTypeAxis = clir_OptionTwoMember / us-gaap_TitleOfIndividualAxis = clir_RichardFRutkowskiMember
Scenario, Forecast [Member]
Financial Liabilities Fair Value Disclosure	842,000us-gaap_FinancialLiabilitiesFairValueDisclosure / us-gaap_StatementScenarioAxis = us-gaap_ScenarioForecastMember	372,000us-gaap_FinancialLiabilitiesFairValueDisclosure / us-gaap_StatementScenarioAxis = us-gaap_ScenarioForecastMember	470,000us-gaap_FinancialLiabilitiesFairValueDisclosure / us-gaap_StatementScenarioAxis = us-gaap_ScenarioForecastMember
Scenario, Forecast [Member] | Richard F. Rutkowski [Member]
Officers' Compensation		359,000us-gaap_OfficersCompensation / us-gaap_StatementScenarioAxis = us-gaap_ScenarioForecastMember / us-gaap_TitleOfIndividualAxis = clir_RichardFRutkowskiMember	60,000us-gaap_OfficersCompensation / us-gaap_StatementScenarioAxis = us-gaap_ScenarioForecastMember / us-gaap_TitleOfIndividualAxis = clir_RichardFRutkowskiMember
General and Administrative Expense [Member]
Financial Liabilities Fair Value Disclosure	$ 943,000us-gaap_FinancialLiabilitiesFairValueDisclosure / us-gaap_IncomeStatementLocationAxis = us-gaap_GeneralAndAdministrativeExpenseMember

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- Definition

Fair value of financial obligations, including, but not limited to, debt instruments, derivative liabilities, federal funds purchased and sold under agreements to repurchase, securities loaned or sold under agreements to repurchase, financial instruments sold not yet purchased, guarantees, line of credit, loans and notes payable, servicing liability, and trading liabilities.

+ References

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- Definition

Amount charged against operating income increasing loss contingency liability, after adjustments to reduce previously estimated charges.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349

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- Definition

Expenditures for salaries of officers. Does not include allocated share-based compensation, pension and post-retirement benefit expense or other labor-related non-salary expense. For commercial and industrial companies, excludes any direct and overhead labor that is included in cost of goods sold.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.4)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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