XML 23 R13.htm IDEA: XBRL DOCUMENT v3.24.1.1.u2

Mortgage Loans in Process of Securitization	3 Months Ended
	Mar. 31, 2024
Mortgage Loans in Process of Securitization.
Mortgage Loans in Process of Securitization	Note 3:   Mortgage Loans in Process of Securitization Mortgage loans in process of securitization are recorded at fair value with changes in fair value recorded in earnings. These include multi-family rental real estate loan originations to be sold as Ginnie Mae mortgage-backed securities, and Fannie Mae and Freddie Mac participation certificates, all of which are pending settlements under firm investor commitments to purchase the securities, typically occurring within 30 days. The fair value increases recorded in earnings for mortgage loans in process of securitization totaled $0.7 million and $4.0 million for the three months ended March 31, 2024 and 2023, respectively. ​

X

- Definition

Mortgage Loans in Process of Securitization [Abstract]

+ References

No definition available.

+ Details

Name:	mbin_MortgageLoansInProcessOfSecuritizationAbstract
Namespace Prefix:	mbin_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The entire disclosure for mortgage loans in process of securitization.

+ References

No definition available.

+ Details

Name:	mbin_MortgageLoansInProcessOfSecuritizationTextBlock
Namespace Prefix:	mbin_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration