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Commitments and Contingencies (Details Textual) (USD $) | 12 Months Ended | 0 Months Ended
--- | --- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Feb. 03, 2015
Loss Contingencies [Line Items] |  |  |
Rent Expense Escalation Percentage | 3.00%clir_RentExpenseEscalationPercentage |  |
Increase In Deferred Rent | $ 2,000 clir_IncreaseInDeferredRent |  |
Reduction In Deferred Rent |  | 4,000 clir_ReductionInDeferredRent |
Operating Leases, Rent Expense | 161,000 us-gaap_LeaseAndRentalExpense | 135,000 us-gaap_LeaseAndRentalExpense |
Contractual Obligation | 300,000 us-gaap_ContractualObligation |  |
Obligation To Pay In Common Stock At Fair Value | 150,000 clir_ObligationToPayInCommonStockAtFairValue |  |
Triple Net Operating Cost | 3,000 clir_TripleNetOperatingCost |  |
Stephen E. Pirnat [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Salaries, Wages and Officers' Compensation |  |  | 350,000 us-gaap_SalariesWagesAndOfficersCompensation / us-gaap_TitleOfIndividualAxis = clir_StephenEPirnatMember
Share-based Compensation Arrangement by Share-based Payment Award, Maximum Employee Subscription Rate |  |  | 60.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionRate / us-gaap_TitleOfIndividualAxis = clir_StephenEPirnatMember
Labor and Related Expense |  |  | $ 100,000 us-gaap_LaborAndRelatedExpense / us-gaap_TitleOfIndividualAxis = clir_StephenEPirnatMember

X
- Definition The increase during the reporting period in the amount due that is the result of the cumulative difference between actual rent due and rental income recognized on a straight-line basis. + References No definition available. + Details
Name: | clir_IncreaseInDeferredRent
Namespace Prefix: | clir_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Obligation to pay company's common stock at fair value. + References No definition available. + Details
Name: | clir_ObligationToPayInCommonStockAtFairValue
Namespace Prefix: | clir_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The decrease during the reporting period in the amount due that is the result of the cumulative difference between actual rent due and rental income recognized on a straight-line basis. + References No definition available. + Details
Name: | clir_ReductionInDeferredRent
Namespace Prefix: | clir_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The percentage by which rent expense will escalate annually. + References No definition available. + Details
Name: | clir_RentExpenseEscalationPercentage
Namespace Prefix: | clir_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of triple net operating cost payable during the period. + References No definition available. + Details
Name: | clir_TripleNetOperatingCost
Namespace Prefix: | clir_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of contractual obligation, including but not limited to, long-term debt, capital lease obligations, operating lease obligations, purchase obligations, and other commitments. + References No definition available. + Details
Name: | us-gaap_ContractualObligation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The aggregate amount of expenditures for salaries, wages, profit sharing and incentive compensation, and other employee benefits, including equity-based compensation, and pension and other postretirement benefit expense. + 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
Name: | us-gaap_LaborAndRelatedExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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
- Details
Name: | us-gaap_LossContingenciesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
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- Definition Expenditures for salaries for officers and non-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 No definition available. + Details
Name: | us-gaap_SalariesWagesAndOfficersCompensation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The highest percentage of annual salary that an employee is permitted to utilize with respect to the plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_TitleOfIndividualAxis=clir_StephenEPirnatMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |