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Statement of Stockholders' Equity (USD $) | Total | Common Stock [Member] | Additional Paid-in Capital [Member] | Accumulated Deficit [Member]
--- | --- | --- | --- | ---
Balances at Dec. 31, 2012 | $ 8,636,000 us-gaap_StockholdersEquity | $ 1,000 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | $ 17,314,000 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | $ (8,679,000)us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedDeficitDuringDevelopmentStageMember
Balances (in shares) at Dec. 31, 2012 |  | 8,752,015 us-gaap_SharesOutstanding / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |
Shares issued for services | 150,000 clir_StockIssuedDuringPeriodValueForServices | 0 clir_StockIssuedDuringPeriodValueForServices / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 150,000 clir_StockIssuedDuringPeriodValueForServices / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 0 clir_StockIssuedDuringPeriodValueForServices / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedDeficitDuringDevelopmentStageMember
Shares issued for services (in shares) |  | 30,000 clir_StockIssuedDuringPeriodSharesForServices / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |
Shares issued for services one | 102,000 clir_StockIssuedDuringPeriodValueForServicesOne | 0 clir_StockIssuedDuringPeriodValueForServicesOne / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 102,000 clir_StockIssuedDuringPeriodValueForServicesOne / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 0 clir_StockIssuedDuringPeriodValueForServicesOne / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedDeficitDuringDevelopmentStageMember
Shares issued for services one (in shares) |  | 11,250 clir_StockIssuedDuringPeriodSharesForServicesOne / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |
Shares issued upon exercise of warrant ($2.20 per share) | 39,000 clir_StockIssuedDuringPeriodValueExerciseOfWarrant | 0 clir_StockIssuedDuringPeriodValueExerciseOfWarrant / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 39,000 clir_StockIssuedDuringPeriodValueExerciseOfWarrant / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 0 clir_StockIssuedDuringPeriodValueExerciseOfWarrant / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedDeficitDuringDevelopmentStageMember
Shares issued upon exercise of warrant ($2.20 per share) (in shares) |  | 17,409 clir_StockIssuedDuringPeriodSharesExerciseOfWarrant / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |
Share based compensation | 146,000 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation | 0 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 146,000 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 0 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedDeficitDuringDevelopmentStageMember
Share based compensation (in shares) |  | 0 us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |
Net loss | (5,285,000)us-gaap_NetIncomeLoss | 0 us-gaap_NetIncomeLoss / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 0 us-gaap_NetIncomeLoss / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | (5,285,000)us-gaap_NetIncomeLoss / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedDeficitDuringDevelopmentStageMember
Balances at Dec. 31, 2013 | 3,788,000 us-gaap_StockholdersEquity | 1,000 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 17,751,000 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | (13,964,000)us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedDeficitDuringDevelopmentStageMember
Balances (in shares) at Dec. 31, 2013 |  | 8,810,674 us-gaap_SharesOutstanding / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |
Shares issued for services | 222,000 clir_StockIssuedDuringPeriodValueForServices | 0 clir_StockIssuedDuringPeriodValueForServices / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 222,000 clir_StockIssuedDuringPeriodValueForServices / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 0 clir_StockIssuedDuringPeriodValueForServices / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedDeficitDuringDevelopmentStageMember
Shares issued for services (in shares) |  | 21,625 clir_StockIssuedDuringPeriodSharesForServices / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |
Shares issued in registered direct offering ($8.00 per share) | 6,500,000 clir_StockIssuedDuringPeriodValueRegisteredDirectOffering | 0 clir_StockIssuedDuringPeriodValueRegisteredDirectOffering / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 6,500,000 clir_StockIssuedDuringPeriodValueRegisteredDirectOffering / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 0 clir_StockIssuedDuringPeriodValueRegisteredDirectOffering / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedDeficitDuringDevelopmentStageMember
Shares issued in registered direct offering ($8.00 per share) (in shares) |  | 812,500 clir_StockIssuedDuringPeriodSharesRegisteredDirectOffering / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |
Issuance costs of registered direct offering | (812,000)clir_AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCostsAssociatedWithInitialDirectOffering | 0 clir_AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCostsAssociatedWithInitialDirectOffering / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | (812,000)clir_AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCostsAssociatedWithInitialDirectOffering / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 0 clir_AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCostsAssociatedWithInitialDirectOffering / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedDeficitDuringDevelopmentStageMember
Share based payments of warrants | 92,000 us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued | 0 us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 92,000 us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 0 us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedDeficitDuringDevelopmentStageMember
Shares issued upon exercise of options ($2.20 per share) | 35,000 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised | 0 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 35,000 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 0 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedDeficitDuringDevelopmentStageMember
Shares issued upon exercise of options ($2.20 per share) (in shares) |  | 23,337 us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |
Shares issued upon exercise of options ($4.88 per share) | 65,000 clir_StockIssuedDuringPeriodValueStockOptionsExercisedOne | 0 clir_StockIssuedDuringPeriodValueStockOptionsExercisedOne / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 65,000 clir_StockIssuedDuringPeriodValueStockOptionsExercisedOne / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 0 clir_StockIssuedDuringPeriodValueStockOptionsExercisedOne / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedDeficitDuringDevelopmentStageMember
Shares issued upon exercise of options ($4.88 per share) (in shares) |  | 13,340 clir_StockIssuedDuringPeriodSharesStockOptionsExercisedOne / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |
Share based compensation | 365,000 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation | 0 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 365,000 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 0 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedDeficitDuringDevelopmentStageMember
Share based compensation (in shares) |  | 0 us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |
Net loss | (7,296,000)us-gaap_NetIncomeLoss | 0 us-gaap_NetIncomeLoss / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 0 us-gaap_NetIncomeLoss / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | (7,296,000)us-gaap_NetIncomeLoss / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedDeficitDuringDevelopmentStageMember
Balances at Dec. 31, 2014 | $ 2,959,000 us-gaap_StockholdersEquity | $ 1,000 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | $ 24,218,000 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | $ (21,260,000)us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedDeficitDuringDevelopmentStageMember
Balances (in shares) at Dec. 31, 2014 |  | 9,681,476 us-gaap_SharesOutstanding / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |

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