Line Of Credit Facility, Minimum Cancellation Notice

No definition available.

Name:	mpic_LineOfCreditFacilityMinimumCancellationNotice
Namespace Prefix:	mpic_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

LineOfCreditFacilityExpirationDate1

+ References

No definition available.

+ Details

Name:	mpic_LineOfCreditFacilityRenewalPeriod
Namespace Prefix:	mpic_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Line Of Credit, Maturity Period

+ References

No definition available.

+ Details

Name:	mpic_LineOfCreditMaturityPeriod
Namespace Prefix:	mpic_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The minimum percent of collateral security required of outstanding loan balance.

+ References

No definition available.

+ Details

Name:	mpic_MinimumCollateralizationRatio
Namespace Prefix:	mpic_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of assets pledged to secure a debt instrument.

+ References

No definition available.

+ Details

Name:	mpic_Minimumliquidity
Namespace Prefix:	mpic_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Number Of Short Term Demand Credit Facilities

+ References

No definition available.

+ Details

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

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The effective interest rate at the end of the reporting period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22)(b))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(19)(b))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

+ Details

Name:	us-gaap_LineOfCreditFacilityInterestRateAtPeriodEnd
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
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

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480738/235-10-S50-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(f))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481544/470-10-50-6

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481544/470-10-50-6

+ Details

Name:	us-gaap_LineOfCreditFacilityLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
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

+ Details

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

- Definition

Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-SubTopic 10
-Topic 210
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16)(a)(2))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1

+ Details

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

- Details

Name:	us-gaap_LineOfCreditFacilityAxis=mpic_CreditFacilityThreeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_LineOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	us-gaap_LineOfCreditFacilityAxis=mpic_KctOperatingLocMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LineOfCreditFacilityAxis=mpic_KctWarehouseLocMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=mpic_CreditFacilityThreeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=mpic_SecuredBorrowingsRelatedPartyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Credit Facilities and Other Debt - Narrative (Details) $ in Thousands			12 Months Ended
	Jun. 06, 2022 USD ($) item	Sep. 23, 2021 USD ($)	Dec. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)
Credit Facilities and Other Debt
Interest Rate, Line of Credit			4.65%	5.37%
Secured borrowings outstanding			$ 6	$ 6
ACCU Line of Credit. 9.25% maturing September 23, 2025 \| ACCU line of credit
Credit Facilities and Other Debt
Interest Rate, Line of Credit			8.00%
ACCU Line of Credit. 9.25% maturing September 23, 2025 \| ACCU line of credit
Credit Facilities and Other Debt
Spread over prime rate		0.50%
Interest Rate, Line of Credit			8.00%
Maturity period		1 year
Maximum borrowing capacity		$ 5,000
ACCU Line of Credit. 9.25% maturing September 23, 2025 \| ACCU line of credit \| Minimum
Credit Facilities and Other Debt
Interest Rate, Line of Credit		4.00%
KCT Credit Union
Credit Facilities and Other Debt
Number of short-term demand credit facilities \| item	2
KCT Credit Union \| KCT Operating LOC
Credit Facilities and Other Debt
Maturity period	1 year
Maximum borrowing capacity	$ 5,000
KCT Credit Union \| KCT Warehouse LOC, 9.00% maturing on June 6, 2025
Credit Facilities and Other Debt
Maturity period	1 year
Maximum borrowing capacity	$ 5,000
ACCU Line of Credit. 9.25% maturing September 23, 2025 \| ACCU line of credit
Credit Facilities and Other Debt
Facility renewal period		1 year
Minimum cancellation notice			30 days
Minimum Liquidity		$ 10,000
Minimum collateralization ratio			120.00%
ACCU Secured, Various Interest Rate, Maturing on various dates
Credit Facilities and Other Debt
Secured borrowings outstanding			$ 6	$ 6