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Retirement Plan | 12 Months Ended
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Dec. 31, 2018
Retirement Plan [Abstract] |
Retirement Plan [Text Block] | Note 9 – Retirement Plan The Company has a defined contribution retirement plan covering all of its employees whereby the Company matches employee contributions up to 3% of each employee’s 2018 and 2017 earnings. The Company’s matching contribution expense totaled $85,000 and $86,000 in 2018 and 2017, respectively.

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Period Type: | duration

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- Definition The entire disclosure for a retirement plan. + References No definition available. + Details
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Namespace Prefix: | clir_
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Balance Type: | na
Period Type: | duration