Foreclosed Assets - Foreclosed Asset Expenses (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024
Foreclosed Assets
Provision for losses	$ 0	$ 0
Operating expenses	19	11
Total foreclosed asset expenses	$ 19	$ 11

The amount of operating expenses net of rental income from foreclosed assets.

No definition available.

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