v3.22.2

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 |  |  |
Related Party Transaction [Line Items] |  |  |
Maximum borrowing capacity | $ 5,000,000 |  |
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 |  |

X
- Definition Percentage of obligation to provide funds in the aggregate loan value under the agreement. + References No definition available. + Details
Name: | mcvt_ObligationToProvideFundsInAggregateLoanValuePercentage
Namespace Prefix: | mcvt_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- 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

X
- 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

X
- 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

X
- 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

X
- 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

X
- 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

X
- 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

X
- 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

X
- 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

X
- 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

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

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

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

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

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

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