Number of financing receivables excluding accrued interest that have been modified by troubled debt restructurings.

No definition available.

Name:	mpic_FinancingReceivableExcludingAccruedInterestModificationsNumberOfContracts
Namespace Prefix:	mpic_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Funds Committed To Be Advanced In Connection With Impaired Loans

+ References

No definition available.

+ Details

Name:	mpic_FundsCommittedToBeAdvancedInConnectionWithImpairedLoans
Namespace Prefix:	mpic_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Loan participations transferred under recourse agreement.

+ References

No definition available.

+ Details

Name:	mpic_LoanParticipationsTransferredUnderRecourseAgreement
Namespace Prefix:	mpic_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The number of loans that are modified and past due and written off.

+ References

No definition available.

+ Details

Name:	mpic_LoansModifiedThatArePastMaturityAndWrittenOff
Namespace Prefix:	mpic_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Number Of Loan Categories

+ References

No definition available.

+ Details

Name:	mpic_NumberOfLoanCategories
Namespace Prefix:	mpic_
Data Type:	xbrli:positiveIntegerItemType
Balance Type:	na
Period Type:	instant

- Definition

Number Of Loan Portfolio Segments

+ References

No definition available.

+ Details

Name:	mpic_NumberOfLoanPortfolioSegments
Namespace Prefix:	mpic_
Data Type:	xbrli:integerItemType
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_LoansAndLeasesReceivableDisclosureLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Yield on the receivable, on which interest has been imputed, as calculated from its issuance value or purchase price. The calculated effective interest rate considers factors such as the issued face value or price paid for the receivable, the time period between payments, and the time until maturity [full receipt] of the receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 835
-SubTopic 30
-Name Accounting Standards Codification
-Section 55
-Paragraph 8
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482949/835-30-55-8

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 835
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482900/835-30-50-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 835
-SubTopic 30
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482925/835-30-45-2

+ Details

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

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=mpic_MinistryLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=mpic_WhollyOwnedFirstFinancingReceivableMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LoanRestructuringModificationAxis=us-gaap_ExtendedMaturityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LoanRestructuringModificationAxis=mpic_LoanModificationPaymentTypeToInterestMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Loans Receivable and Allowance for Loan Losses - Narrative (Details) $ in Thousands		12 Months Ended
	Jan. 01, 2023 segment	Dec. 31, 2025 USD ($) loan segment item	Dec. 31, 2024 USD ($) loan
Loans and Leases Receivable Disclosure [Line Items]
Number of loan portfolio segments \| segment	2	2
Number of loan categories \| item		8
Loan interest rate		6.97%	6.88%
Loan participations transferred under recourse agreement \| $		$ 6	$ 6
Loans modified that are past maturity, write off		1
Funds committed to be advanced in connection with impaired loans \| $		$ 0
Non-profit Commercial Loans
Loans and Leases Receivable Disclosure [Line Items]
Number of modified loans		3	6
For-profit Commercial
Loans and Leases Receivable Disclosure [Line Items]
Number of modified loans		0	0
Wholly-Owned First
Loans and Leases Receivable Disclosure [Line Items]
Number of modified loans		6
Wholly-Owned First \| Non-profit Commercial Loans
Loans and Leases Receivable Disclosure [Line Items]
Number of modified loans		3	6
Wholly-Owned First \| Non-profit Commercial Loans \| Short-term extensions
Loans and Leases Receivable Disclosure [Line Items]
Number of modified loans		6
Wholly-Owned First \| Non-profit Commercial Loans \| Loan modification payment type to interest
Loans and Leases Receivable Disclosure [Line Items]
Number of modified loans			5