Represents aggregate amount of repayment of the grant as a percentage of the fund.

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- Definition

Reflects the estimated amount of loss from minimum and maximum repayment amount.

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No definition available.

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- Definition

Represents possible loss between repayment amounts as a percentage of the grant funding.

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No definition available.

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- Definition

Represents additional payment of the grant as a percentage of the fund, tranche one.

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No definition available.

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- Definition

Represents additional payment of the grant as a percentage of the fund, tranche three.

+ References

No definition available.

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- Definition

Represents additional payment of the grant as a percentage of the fund, tranche two.

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No definition available.

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Namespace Prefix:	clnn_
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- Definition

Repayment amount of the grant needed upon closing.

+ References

No definition available.

+ Details

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- Definition

Cumulative sales amount required to repay additional grant funding, tranche one.

+ References

No definition available.

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- Definition

Cumulative sales amount required to repay additional grant funding, tranche three.

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No definition available.

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Cumulative sales amount required to repay additional grant funding, tranche two.

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No definition available.

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- Definition

Represents additional payment of the grant as a percentage of the fund if all milestones are achieved.

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No definition available.

+ Details

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- Definition

Represents amount of repayment needed upon closing as a percentage of the grant funding.

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No definition available.

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Represents repayment amount of the grant as a percentage of grant funding upon first commercial product sale.

+ References

No definition available.

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- Definition

Amount of increase (decrease) in income from government assistance.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 832
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-Section 50
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- Definition

The minimum amount the entity agreed to spend under the long-term purchase commitment.

+ References

No definition available.

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Data Type:	xbrli:monetaryItemType
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Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Details

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- Details

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Period Type:

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Note 9 - Commitments and Contingencies (Details Textual) - USD ($) $ in Thousands	1 Months Ended		3 Months Ended		6 Months Ended		12 Months Ended
	May 31, 2023	Sep. 30, 2019	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024
Government Assistance, Amount			$ 16	$ 26	$ 211	$ 312
Minimum [Member] \| Debt Registration Fee [Member] \| The 2024 S S C P Notes [Member]
Loss Contingency, Estimate of Possible Loss			200		200
Maximum [Member] \| Debt Registration Fee [Member] \| The 2024 S S C P Notes [Member]
Loss Contingency, Estimate of Possible Loss			$ 1,000		1,000
Grant Funding Related to VISIONARY-MS Phase 2 Clinical Trial [Member] \| National Multiple Sclerosis Society [Member]
Government Assistance, Amount		$ 300
Government Assistance, Repayment, Percentage of Grant Funding Upon First Commercial Product Sale		50.00%
Government Assistance, Repayment, Additional Percentage of Grant Funding, Tranche One		50.00%
Government Assistance, Repayment, Cumulative Sales, Tranche One		$ 10,000
Government Assistance, Repayment, Cumulative Sales, Tranche Two		$ 50,000
Government Assistance, Repayment, Additional Percentage of Grant Funding, Tranche Three		200.00%
Government Assistance, Repayment, Cumulative Sales, Tranche Three		$ 100,000
Government Assistance, Repayment, Maximum Percentage of Grant Funding When All Milestones Achieved		450.00%
Government Assistance, Aggregate Repayment, Percentage of Grant Funding		300.00%
Government Assistance, Repayment, Percentage of Grant Funding Upon Closing		300.00%
Government Assistance, Repayment Amount Upon Closing		$ 1,000
Grant Funding Related to VISIONARY-MS Phase 2 Clinical Trial [Member] \| National Multiple Sclerosis Society [Member] \| Minimum [Member]
Government Assistance, Possible Loss, Percentage of Grant Funding		50.00%
Government Assistance, Possible Loss Between Minimum and Maximum Repayment Amounts		$ 200
Grant Funding Related to VISIONARY-MS Phase 2 Clinical Trial [Member] \| National Multiple Sclerosis Society [Member] \| Maximum [Member]
Government Assistance, Possible Loss, Percentage of Grant Funding		450.00%
Government Assistance, Possible Loss Between Minimum and Maximum Repayment Amounts		$ 1,500
Grant Funding Related to REPAIR-MS Phase 2 Clinical Trial [Member] \| National Multiple Sclerosis Society [Member]
Government Assistance, Amount	$ 700
Government Assistance, Repayment, Additional Percentage of Grant Funding, Tranche Two		150.00%
Government Assistance, Aggregate Repayment, Percentage of Grant Funding	150.00%
Government Assistance, Repayment, Percentage of Grant Funding Upon Closing	150.00%
Government Assistance, Repayment Amount Upon Closing	$ 1,000
Grant Funding Related to REPAIR-MS Phase 2 Clinical Trial [Member] \| National Multiple Sclerosis Society [Member] \| Minimum [Member]
Government Assistance, Possible Loss Between Minimum and Maximum Repayment Amounts	300
Grant Funding Related to REPAIR-MS Phase 2 Clinical Trial [Member] \| National Multiple Sclerosis Society [Member] \| Maximum [Member]
Government Assistance, Possible Loss Between Minimum and Maximum Repayment Amounts	$ 3,000
Capital Addition Purchase Commitments [Member]
Long-Term Purchase Commitment, Amount					$ 200		$ 200