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Note 3 - Notes Receivable (Details Textual) - USD ($)	1 Months Ended	3 Months Ended	9 Months Ended		12 Months Ended
	Feb. 28, 2021	Mar. 31, 2024	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Payments to Acquire Notes Receivable		$ 200,000	$ 200,000	$ 450,000	$ 650,000
Notes Receivable, Stated Interest Rate		5.25%		5.25%
Financing Receivable, after Allowance for Credit Loss, Current			240,000
Financing Receivable, after Allowance for Credit Loss, Noncurrent			$ 403,000
Privately-Held Identity and Professional Services Company With Ties to the FinTech Industry [Member]
Payments to Acquire Notes Receivable	$ 550,000
Notes Receivable, Stated Interest Rate	4.60%

X

- Definition

The stated interest rate of notes receivable.

+ References

No definition available.

+ Details

Name:	ccrd_NotesReceivableStatedInterestRate
Namespace Prefix:	ccrd_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Amortized cost, after allowance for credit loss, of financing receivable classified as current. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481990/310-10-45-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(7))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1

+ Details

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

X

- Definition

Amount, after allowance for credit loss, of financing receivable, classified as noncurrent.

+ References

No definition available.

+ Details

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

X

- Definition

The cash outflow to acquire an agreement for an unconditional promise by the maker to pay the entity (holder) a definite sum of money at a future date. Such amount may include accrued interest receivable in accordance with the terms of the note. The note also may contain provisions including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among myriad other features and characteristics.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-13

+ Details

Name:	us-gaap_PaymentsToAcquireNotesReceivable
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	srt_CounterpartyNameAxis=ccrd_PrivatelyheldIdentityAndProfessionalServicesCompanyWithTiesToTheFintechIndustryMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: