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Termination of Employment Agreement (Details Textual) (USD $) | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2016 | Dec. 31, 2015
Loss Contingency Accrual, Provision | $ 50,000 us-gaap_LossContingencyAccrualProvision |  |
Richard F. Rutkowski [Member] | Option One [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Number of Shares | 15,625 us-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 | $ 4.88 us-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 | 14,219 us-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 | $ 9.90 us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedWeightedAverageGrantDateFairValue / us-gaap_OptionIndexedToIssuersEquityTypeAxis = clir_OptionTwoMember / us-gaap_TitleOfIndividualAxis = clir_RichardFRutkowskiMember |  |
Scenario, Forecast [Member] |  |  |
Financial Liabilities Fair Value Disclosure | 842,000 us-gaap_FinancialLiabilitiesFairValueDisclosure / us-gaap_StatementScenarioAxis = us-gaap_ScenarioForecastMember | 372,000 us-gaap_FinancialLiabilitiesFairValueDisclosure / us-gaap_StatementScenarioAxis = us-gaap_ScenarioForecastMember | 470,000 us-gaap_FinancialLiabilitiesFairValueDisclosure / us-gaap_StatementScenarioAxis = us-gaap_ScenarioForecastMember
Scenario, Forecast [Member] | Richard F. Rutkowski [Member] |  |  |
Officers' Compensation |  | 359,000 us-gaap_OfficersCompensation / us-gaap_StatementScenarioAxis = us-gaap_ScenarioForecastMember / us-gaap_TitleOfIndividualAxis = clir_RichardFRutkowskiMember | 60,000 us-gaap_OfficersCompensation / us-gaap_StatementScenarioAxis = us-gaap_ScenarioForecastMember / us-gaap_TitleOfIndividualAxis = clir_RichardFRutkowskiMember
General and Administrative Expense [Member] |  |  |
Financial Liabilities Fair Value Disclosure | $ 943,000 us-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 No definition available. + Details
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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 + Details
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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 + Details
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- Definition Number of options vested. + References No definition available. + Details
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- Definition Weighted average grant-date fair value of options vested. + References No definition available. + Details
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