XML 66 R55.htm IDEA: XBRL DOCUMENT v3.21.2

Notes Payable (Details) - Schedule of long-term debt, net of original issue discount and unamortized debt issuance costs - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Term Loans:
Total term loans	$ 20,983	$ 1,949
Unamortized debt issuance costs and original issue discounts	(1,811)
Less convertible notes payable, net of unamortized debt discount and issuance costs (see Note 11)	(4,559)
Total notes payable	$ 14,613	1,949
Maryland Department of Housing & Community Development [Member]
Term Loans:
Interest Rate	8.00%
Total term loans	$ 819	1,080
Advance Cecil, Inc. [Member]
Term Loans:
Interest Rate	8.00%
Total term loans	$ 164	216
Paycheck Protection Program [Member]
Term Loans:
Interest Rate	1.00%
Total term loans		647
Avenue Venture Opportunities Fund, L.P. [Member]
Term Loans:
Interest Rate	9.85%
Total term loans	$ 20,000
Other [Member]
Term Loans:
Interest Rate	0.00%
Total term loans		$ 6

X

- Definition

Interest Rate.

+ References

No definition available.

+ Details

Name:	clnn_InterestRate
Namespace Prefix:	clnn_
Data Type:	dtr:percentItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	clnn_TermLoansAbstract
Namespace Prefix:	clnn_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Total notes payable and convertible notes payable.

+ References

No definition available.

+ Details

Name:	clnn_TotalNotesPayableAndConvertibleNotesPayable
Namespace Prefix:	clnn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Total Term Loans.

+ References

No definition available.

+ Details

Name:	clnn_TotalTermLoans
Namespace Prefix:	clnn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of unamortized debt discount (premium) and debt issuance costs.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 55
-Paragraph 69C
-URI http://asc.fasb.org/extlink&oid=123466577&loc=SL123495737-112612

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)(2)
-URI http://asc.fasb.org/extlink&oid=123466204&loc=SL6031897-161870

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1D
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495340-112611

Reference 4: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 55
-Paragraph 69B
-URI http://asc.fasb.org/extlink&oid=123466577&loc=SL123495735-112612

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=124435984&loc=d3e28555-108399

+ Details

Name:	us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.17)
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_UnamortizedDebtIssuanceExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	clnn_TermLoansAxis=clnn_MarylandDepartmentOfHousingCommunityDevelopmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	clnn_TermLoansAxis=clnn_AdvanceCecilIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	clnn_TermLoansAxis=clnn_PaycheckProtectionProgramMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	clnn_TermLoansAxis=clnn_AvenueVentureOpportunitiesFundsLPMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	clnn_TermLoansAxis=clnn_OtherTermLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: