Per share amount of SAR grant.

No definition available.

Name:	ccur_CashValueOfStockAppreciationRightsGrantPerShare
Namespace Prefix:	ccur_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of reimbursement received or receivable for expenses incurred.

+ References

No definition available.

+ Details

Name:	ccur_ExpenseReimbursements
Namespace Prefix:	ccur_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The amount of expense related to revaluation.

+ References

No definition available.

+ Details

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Namespace Prefix:	ccur_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Represents the base price per share of cash-settled SARs to settle the management fee and performance fee.

+ References

No definition available.

+ Details

Name:	ccur_SettlementOfManagementFeeAndPerformanceFeeThroughCashSettledStockAppreciationRightsBasePricePerShare
Namespace Prefix:	ccur_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 14.F)
-URI http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

+ Details

Name:	us-gaap_AllocatedShareBasedCompensationExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Carrying amount of the unpaid portion of the fee payable to the managing member or general partner for management of the fund or trust.

+ References

No definition available.

+ Details

Name:	us-gaap_ManagementFeePayable
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_RelatedPartyTransactionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_IncomeStatementLocationAxis=us-gaap_SellingGeneralAndAdministrativeExpensesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AwardTypeAxis=ccur_StockAppreciationRightsCashSettledMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=srt_AffiliatedEntityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_TypeOfArrangementAxis=ccur_ManagementAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AwardTypeAxis=us-gaap_StockAppreciationRightsSARSMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=ccur_CidmLlcMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_TypeOfArrangementAxis=ccur_OmnibusAmendmentMember
Namespace Prefix:
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Commitments and Contingencies and Related Party Transactions - Related Party Transactions (Details) - USD ($)			1 Months Ended	3 Months Ended			6 Months Ended
	Jun. 04, 2020	Feb. 28, 2019	Feb. 28, 2019	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Dec. 31, 2020
Related Party Transaction [Line Items]
Management Fee Payable				$ 2,915,000		$ 2,841,000	$ 2,915,000
Selling, general and administrative expenses
Related Party Transaction [Line Items]
Management Fee Payable				2,915,000		2,841,000	2,915,000
Cash-settled SARs \| Spartacus Sponsor LLC
Related Party Transaction [Line Items]
Expense reimbursements per quarter							50,000
Management Agreement \| SARs
Related Party Transaction [Line Items]
Cash value of a SAR grant, per share	$ 3.50
Management Agreement \| Cash-settled SARs
Related Party Transaction [Line Items]
SARs base price			$ 0.01
Management Agreement \| To be settled in cash \| Prior Asset Manager
Related Party Transaction [Line Items]
SARs base price		$ 0.01
SARs granted		797,446
Omnibus Amendment
Related Party Transaction [Line Items]
Compensation expense				287,000			603,000
Expense related to revaluation				$ 116,000			$ 214,000
Omnibus Amendment \| SARs
Related Party Transaction [Line Items]
Compensation expense						2,552,000
Omnibus Amendment \| Cash-settled SARs
Related Party Transaction [Line Items]
SARs granted					90,310
Compensation expense						$ 289,000