XML 72 R60.htm IDEA: XBRL DOCUMENT
v3.25.1

COMMITMENTS AND CONTINGENCIES (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2025 | Dec. 31, 2024
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |
Amount of off-balance-sheet financial instruments | $ 137,184 | $ 140,481
Minimum |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |
Fixed interest rate off-balance-sheet financial instruments | 3.00% | 3.00%
Variable interest rate off-balance-sheet financial instrument | 6.50% | 6.30%
Maximum |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |
Fixed interest rate off-balance-sheet financial instruments | 9.30% | 9.30%
Variable interest rate off-balance-sheet financial instrument | 11.50% | 11.50%
Commitments term | 2 years |
Standby and commercial letters of credit |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |
Amount of off-balance-sheet financial instruments | $ 29,019 | $ 31,920
Amount of off-balance-sheet financial instruments collateral received | $ 22,200 | $ 24,100

X
- Definition Represents the information regarding commitments Term in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | mcb_CommitmentsTerm
Namespace Prefix: | mcb_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Loans and Leases Receivable, Commitments, Fixed Rates, Interest Rate Percentage + References No definition available. + Details
Name: | mcb_LoansAndLeasesReceivableCommitmentsFixedRatesInterestRatePercentage
Namespace Prefix: | mcb_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the loans and leases receivable commitments pledged interest-bearing. + References No definition available. + Details
Name: | mcb_LoansAndLeasesReceivableCommitmentsPledged
Namespace Prefix: | mcb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Loans and Leases Receivable, Commitments, variable Rates, Interest Rate Percentage. + References No definition available. + Details
Name: | mcb_LoansAndLeasesReceivableCommitmentsVariableRatesInterestRatePercentage
Namespace Prefix: | mcb_
Data Type: | dtr-types:percentItemType
Balance Type: | na
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_FairValueOffBalanceSheetRisksDisclosureInformationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Reflects the amount of cash required to fully fund agreements to provide advances to borrowers and lessees at stated interest rates. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 942 -SubTopic 825 -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478898/942-825-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 942 -SubTopic 825 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478898/942-825-50-1 + Details
Name: | us-gaap_LoansAndLeasesReceivableCommitmentsFixedRates
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_CommitmentsToExtendCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |