XML 103 R79.htm IDEA: XBRL DOCUMENT v3.21.1

Allowance for Loan Losses (the Allowance) - COVID-19 Loan modifications Programs (Details) $ in Thousands	Dec. 31, 2020 USD ($)
COVID-19 Loan Modification Programs
Portfolio Balance	$ 1,085,633
Total Modifications	156,295
Active Modifications	26,905
Commercial mortgage
COVID-19 Loan Modification Programs
Portfolio Balance	485,103
Total Modifications	96,712
Active Modifications	19,836
Commercial and industrial, including leases
COVID-19 Loan Modification Programs
Portfolio Balance	292,790
Total Modifications	22,727
Construction & land development
COVID-19 Loan Modification Programs
Portfolio Balance	140,246
Total Modifications	24,847
Active Modifications	4,343
Home equity lines and loans
COVID-19 Loan Modification Programs
Portfolio Balance	64,987
Total Modifications	1,488
Residential mortgage
COVID-19 Loan Modification Programs
Portfolio Balance	52,454
Total Modifications	4,563
Small business loans
COVID-19 Loan Modification Programs
Portfolio Balance	49,542
Total Modifications	5,958
Active Modifications	2,726
Consumer
COVID-19 Loan Modification Programs
Portfolio Balance	$ 511

X

- Definition

Total amount of financing receivable modified not treated as troubled debt restructuring.

+ References

No definition available.

+ Details

Name:	mrbk_FinancingReceivableLoanModificationNotTreatedAsTroubleDebtRestructuringTotalModifications
Namespace Prefix:	mrbk_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount of financing receivable modified not treated as troubled debt restructuring.

+ References

No definition available.

+ Details

Name:	mrbk_FinancingReceivableLoanModificationNotTreatedAsTroubledDebtRestructuring
Namespace Prefix:	mrbk_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Active amount of financing receivable modified not treated as troubled debt restructuring.

+ References

No definition available.

+ Details

Name:	mrbk_FinancingReceivableLoanModificationsNotTreatedAsTroubledDebtRestructuringActiveModifications
Namespace Prefix:	mrbk_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

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_FinancingReceivableModificationsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

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

X

- Details

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

X

- Details

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

X

- Details

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

X

- Details

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

X

- Details

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

X

- Details

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