XML 218 R90.htm IDEA: XBRL DOCUMENT
v3.25.4

COMMITMENTS AND CONTINGENCIES (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2024 | Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
COMMITMENTS AND CONTINGENCIES |  |  |  |
Amount of off-balance-sheet financial instruments |  | $ 139,826 | $ 140,481 |
Regulatory settlement reserve | $ 10,000 |  | $ 9,463 | $ (5,521)
Minimum |  |  |  |
COMMITMENTS AND CONTINGENCIES |  |  |  |
Fixed interest rate off-balance-sheet financial instruments |  | 3.30% | 3.00% |
Variable interest rate off-balance-sheet financial instrument |  | 4.80% | 6.30% |
Maximum |  |  |  |
COMMITMENTS AND CONTINGENCIES |  |  |  |
Commitments term |  | 2 years |  |
Fixed interest rate off-balance-sheet financial instruments |  | 9.50% | 9.30% |
Variable interest rate off-balance-sheet financial instrument |  | 10.30% | 11.50% |
Letters of credit |  |  |  |
COMMITMENTS AND CONTINGENCIES |  |  |  |
Amount of off-balance-sheet financial instruments |  | $ 26,388 | $ 31,920 |
Amount of off-balance-sheet financial instruments collateral received |  | $ 21,800 | $ 36,200 |

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 The amount of regulatory settlement reserve expense incurred during reporting period. + References No definition available. + Details
Name: | mcb_RegulatorySettlementReserveExpense
Namespace Prefix: | mcb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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 Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 11 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-11 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 825 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478898/942-825-50-1 + 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: |