Percentage of obligation to provide funds in the aggregate loan value under the agreement.

No definition available.

Name:	mcvt_ObligationToProvideFundsInAggregateLoanValuePercentage
Namespace Prefix:	mcvt_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the debtors' pledge in number of common stock.

+ References

No definition available.

+ Details

Name:	mcvt_RelatedPartyTransactionDebtorsPledgeInNumberOfCommonStock
Namespace Prefix:	mcvt_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the percentage of interest payable monthly.

+ References

No definition available.

+ Details

Name:	mcvt_RelatedPartyTransactionInterestRate
Namespace Prefix:	mcvt_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the principal amount of note obtained.

+ References

No definition available.

+ Details

Name:	mcvt_RelatedPartyTransactionPrincipalAmountOfNoteObtained
Namespace Prefix:	mcvt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Represents the term of promissory note.

+ References

No definition available.

+ Details

Name:	mcvt_RelatedPartyTransactionPromissoryNoteTerm
Namespace Prefix:	mcvt_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the number of shares of common stock owned by related party.

+ References

No definition available.

+ Details

Name:	mcvt_RelatedPartyTransactionSharesOfCommonStockOwned
Namespace Prefix:	mcvt_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1B
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ 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 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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

- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

Name:	us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- 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

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionAxis=mcvt_LoanAndSecurityAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=mcvt_Ms.ZbikowskiAlongWithHerHusbandScottZbikowskiMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

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

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

RELATED-PARTY TRANSACTIONS (Details) - USD ($)	Jan. 03, 2022	Aug. 10, 2018	Mar. 07, 2022
Subsequent events.
Related Party Transaction [Line Items]
Interest rate per annum			48.00%
Loan Agreement \| Subsequent events.
Related Party Transaction [Line Items]
Quarterly unused capacity commitment fee (in percentage)	1.00%
Ms. Zbikowski, along with her husband Scott Zbikowski
Related Party Transaction [Line Items]
Shares of common stock owned by related party		1,765,000
Promissory note term		2 years
Principal amount of note obtained		$ 250,000
Interest payable monthly (as a percent)		10.00%
Debtors' pledge in number of common stock		625,000
Lenders \| Loan Agreement \| Subsequent events.
Related Party Transaction [Line Items]
Maximum borrowing capacity	$ 5,000,000
Obligation to provide funds in aggregate loan amount (in percentage)	0.50%
Loan agreement term	5 years
Lyle A. Berman \| Revolving line of credit \| Subsequent events.
Related Party Transaction [Line Items]
Maximum borrowing capacity	$ 5,000,000
Lyle A. Berman \| Loan Agreement \| Subsequent events.
Related Party Transaction [Line Items]
Maximum borrowing capacity	$ 5,000,000
Interest rate per annum	8.00%
Obligation to provide funds in aggregate loan amount (in percentage)	0.50%
Loan agreement term	5 years