XML 57 R46.htm IDEA: XBRL DOCUMENT
v3.24.2.u1

LOANS AND ALLOWANCE FOR CREDIT LOSSES (Credit Quality Indicator) (Details) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2024 USD ($) | Jun. 30, 2023 loan | Jun. 30, 2024 USD ($) | Jun. 30, 2023 loan | Dec. 31, 2023 USD ($)
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |
2024/2023 | $ 1,075,124 |  | $ 1,075,124 |  | $ 1,957,104
2023/2022 | 1,601,551 |  | 1,601,551 |  | 1,839,749
2022/2021 | 1,590,917 |  | 1,590,917 |  | 698,518
2021/2020 | 561,973 |  | 561,973 |  | 188,086
2020/2019 | 181,566 |  | 181,566 |  | 261,384
2019/2018 & Prior | 317,007 |  | 317,007 |  | 199,491
Revolving | 527,394 |  | 527,394 |  | 497,680
Total loans | 5,855,532 |  | 5,855,532 |  | 5,642,012
Number of TDR loans during the period | loan |  | 0 |  | 0 |
Past Due |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |
Total loans | 38,955 |  | 38,955 |  | 52,548
Current |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |
Total loans | 5,816,577 |  | 5,816,577 |  | 5,589,464
Real Estate |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |
Total loans | 4,735,164 |  | 4,735,164 |  | 4,573,463
Commercial & industrial |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |
2024/2023 | 145,914 |  | 145,914 |  | 186,089
2023/2022 | 124,504 |  | 124,504 |  | 286,277
2022/2021 | 242,479 |  | 242,479 |  | 98,753
2021/2020 | 84,612 |  | 84,612 |  | 26,023
2020/2019 | 19,999 |  | 19,999 |  | 14,390
2019/2018 & Prior | 14,270 |  | 14,270 |  | 5,904
Revolving | 473,516 |  | 473,516 |  | 434,027
Total loans | $ 1,105,294 |  | $ 1,105,294 |  | 1,051,463
Weighted Average Interest Rate Reduction | 3.80% |  | 2.90% |  |
Commercial & industrial | Minimum |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |
Term Extension | 11 months |  | 11 months |  |
Commercial & industrial | Maximum |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |
Term Extension | 12 months |  | 12 months |  |
Commercial & industrial | Past Due |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |
Total loans | $ 6,998 |  | $ 6,998 |  | 6,973
Commercial & industrial | Current |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |
Total loans | 1,098,296 |  | 1,098,296 |  | 1,044,490
Consumer |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |
2019/2018 & Prior | 15,074 |  | 15,074 |  | 17,086
Total loans | 15,074 |  | 15,074 |  | 17,086
Consumer | Past Due |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |
2019/2018 & Prior | 388 |  | 388 |  | 24
Total loans | 388 |  | 388 |  | 24
Consumer | Current |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |
2019/2018 & Prior | 14,686 |  | 14,686 |  | 17,062
Total loans | 14,686 |  | 14,686 |  | 17,062
Commercial |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |
2024/2023 | 778,621 |  | 778,621 |  | 1,525,373
2023/2022 | 1,303,502 |  | 1,303,502 |  | 1,348,371
2022/2021 | 1,207,388 |  | 1,207,388 |  | 527,058
2021/2020 | 395,215 |  | 395,215 |  | 128,624
2020/2019 | 128,497 |  | 128,497 |  | 200,304
2019/2018 & Prior | 215,634 |  | 215,634 |  | 83,309
Revolving | 27,156 |  | 27,156 |  | 44,672
Total loans | 4,056,013 |  | 4,056,013 |  | 3,857,711
Commercial | Commercial |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |
Total loans | 24,000 |  | 24,000 |  | 41,000
Commercial | Real Estate |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |
Total loans | 4,056,013 |  | 4,056,013 |  | 3,857,711
Commercial | Real Estate | Past Due |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |
Total loans | 28,893 |  | 28,893 |  | 24,000
Commercial | Real Estate | Current |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |
Total loans | 4,027,120 |  | 4,027,120 |  | 3,833,711
Construction |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |
2024/2023 | 45,227 |  | 45,227 |  | 84,881
2023/2022 | 45,221 |  | 45,221 |  | 56,065
2022/2021 | 32,701 |  | 32,701 |  |
Revolving | 23,447 |  | 23,447 |  | 12,566
Total loans | 146,596 |  | 146,596 |  | 153,512
Construction | Real Estate |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |
Total loans | 146,596 |  | 146,596 |  | 153,512
Construction | Real Estate | Current |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |
Total loans | 146,596 |  | 146,596 |  | 153,512
Multi-family |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |
2024/2023 | 105,362 |  | 105,362 |  | 115,761
2023/2022 | 83,324 |  | 83,324 |  | 144,955
2022/2021 | 104,730 |  | 104,730 |  | 72,707
2021/2020 | 82,146 |  | 82,146 |  | 23,655
2020/2019 | 23,424 |  | 23,424 |  | 34,533
2019/2018 & Prior | 37,863 |  | 37,863 |  | 69,510
Revolving | 3,275 |  | 3,275 |  | 6,415
Total loans | 440,124 |  | 440,124 |  | 467,536
Multi-family | Multi-family |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |
Total loans | 51,200 |  | 51,200 |  | 20,900
Multi-family | Real Estate |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |
Total loans | 440,124 |  | $ 440,124 |  | 467,536
Weighted Average Interest Rate Reduction |  |  | 4.10% |  |
Multi-family | Real Estate | Minimum |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |
Term Extension |  |  | 6 months |  |
Multi-family | Real Estate | Maximum |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |
Term Extension |  |  | 12 months |  |
Multi-family | Real Estate | Past Due |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |
Total loans |  |  |  |  | 20,939
Multi-family | Real Estate | Current |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |
Total loans | 440,124 |  | $ 440,124 |  | 446,597
One-to-four-family |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |
2024/2023 |  |  |  |  | 45,000
2023/2022 | 45,000 |  | 45,000 |  | 4,081
2022/2021 | 3,619 |  | 3,619 |  |
2021/2020 |  |  |  |  | 9,784
2020/2019 | 9,646 |  | 9,646 |  | 12,157
2019/2018 & Prior | 34,166 |  | 34,166 |  | 23,682
Total loans | 92,431 |  | 92,431 |  | 94,704
One-to-four-family | Current |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |
2024/2023 |  |  |  |  | 45,000
2023/2022 | 45,000 |  | 45,000 |  | 4,081
2022/2021 | 3,619 |  | 3,619 |  |
2021/2020 |  |  |  |  | 9,784
2020/2019 | 9,646 |  | 9,646 |  | 12,157
2019/2018 & Prior | 34,166 |  | 34,166 |  | 23,682
Total loans | 92,431 |  | 92,431 |  | 94,704
One-to-four-family | Real Estate |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |
Total loans | 92,431 |  | 92,431 |  | 94,704
One-to-four-family | Real Estate | Past Due |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |
Total loans | 2,676 |  | 2,676 |  | 612
One-to-four-family | Real Estate | Current |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |
Total loans | 89,755 |  | 89,755 |  | 94,092
Charge-offs |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |
2022/2021 |  |  |  |  | 915
2019/2018 & Prior | 18 |  | 18 |  | 304
Total loans | 18 |  | 18 |  | 1,219
Charge-offs | Commercial & industrial |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |
2022/2021 |  |  |  |  | 915
2019/2018 & Prior |  |  |  |  | 31
Total loans |  |  |  |  | 946
Charge-offs | Consumer |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |
2019/2018 & Prior |  |  |  |  | 273
Total loans |  |  |  |  | 273
Pass/Current |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |
2024/2023 | 1,075,124 |  | 1,075,124 |  | 1,925,329
2023/2022 | 1,569,407 |  | 1,569,407 |  | 1,695,707
2022/2021 | 1,457,110 |  | 1,457,110 |  | 663,018
2021/2020 | 521,879 |  | 521,879 |  | 185,702
2020/2019 | 181,272 |  | 181,272 |  | 261,384
2019/2018 & Prior | 304,121 |  | 304,121 |  | 199,467
Revolving | 499,609 |  | 499,609 |  | 465,900
Total loans | 5,608,522 |  | 5,608,522 |  | 5,396,507
Pass/Current | Commercial & industrial |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |
2024/2023 | 145,914 |  | 145,914 |  | 178,814
2023/2022 | 116,860 |  | 116,860 |  | 252,359
2022/2021 | 201,757 |  | 201,757 |  | 98,753
2021/2020 | 79,865 |  | 79,865 |  | 23,943
2020/2019 | 19,999 |  | 19,999 |  | 14,390
2019/2018 & Prior | 14,270 |  | 14,270 |  | 5,904
Revolving | 445,731 |  | 445,731 |  | 402,247
Total loans | 1,024,396 |  | 1,024,396 |  | 976,410
Pass/Current | Commercial |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |
2024/2023 | 778,621 |  | 778,621 |  | 1,500,873
2023/2022 | 1,279,002 |  | 1,279,002 |  | 1,268,550
2022/2021 | 1,144,603 |  | 1,144,603 |  | 512,497
2021/2020 | 380,807 |  | 380,807 |  | 128,320
2020/2019 | 128,203 |  | 128,203 |  | 200,304
2019/2018 & Prior | 203,136 |  | 203,136 |  | 83,309
Revolving | 27,156 |  | 27,156 |  | 44,672
Total loans | 3,941,528 |  | 3,941,528 |  | 3,738,525
Pass/Current | Construction |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |
2024/2023 | 45,227 |  | 45,227 |  | 84,881
2023/2022 | 45,221 |  | 45,221 |  | 56,065
2022/2021 | 32,701 |  | 32,701 |  |
Revolving | 23,447 |  | 23,447 |  | 12,566
Total loans | 146,596 |  | 146,596 |  | 153,512
Pass/Current | Multi-family |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |
2024/2023 | 105,362 |  | 105,362 |  | 115,761
2023/2022 | 83,324 |  | 83,324 |  | 114,652
2022/2021 | 74,430 |  | 74,430 |  | 51,768
2021/2020 | 61,207 |  | 61,207 |  | 23,655
2020/2019 | 23,424 |  | 23,424 |  | 34,533
2019/2018 & Prior | 37,863 |  | 37,863 |  | 69,510
Revolving | 3,275 |  | 3,275 |  | 6,415
Total loans | 388,885 |  | 388,885 |  | 416,294
Special Mention |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |
2024/2023 |  |  |  |  | 28,340
2023/2022 | 24,500 |  | 24,500 |  | 103,088
2022/2021 | 58,539 |  | 58,539 |  | 14,561
2021/2020 | 14,408 |  | 14,408 |  | 2,384
2020/2019 | 294 |  | 294 |  |
2019/2018 & Prior | 12,498 |  | 12,498 |  |
Revolving | 15,500 |  | 15,500 |  | 28,281
Total loans | 125,739 |  | 125,739 |  | 176,654
Special Mention | Commercial & industrial |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |
2024/2023 |  |  |  |  | 3,840
2023/2022 |  |  |  |  | 33,918
2022/2021 | 19,754 |  | 19,754 |  |
2021/2020 |  |  |  |  | 2,080
Revolving | 15,500 |  | 15,500 |  | 28,281
Total loans | 35,254 |  | 35,254 |  | 68,119
Special Mention | Commercial |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |
2024/2023 |  |  |  |  | 24,500
2023/2022 | 24,500 |  | 24,500 |  | 38,867
2022/2021 | 38,785 |  | 38,785 |  | 14,561
2021/2020 | 14,408 |  | 14,408 |  | 304
2020/2019 | 294 |  | 294 |  |
2019/2018 & Prior | 12,498 |  | 12,498 |  |
Total loans | 90,485 |  | 90,485 |  | 78,232
Special Mention | Multi-family |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |
2023/2022 |  |  |  |  | 30,303
Total loans |  |  |  |  | 30,303
Substandard/Past due |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |
2024/2023 |  |  |  |  | 3,435
2023/2022 | 7,644 |  | 7,644 |  | 40,954
2022/2021 | 75,268 |  | 75,268 |  | 20,939
2021/2020 | 25,686 |  | 25,686 |  |
2019/2018 & Prior | 388 |  | 388 |  | 24
Revolving | 12,285 |  | 12,285 |  | 3,499
Total loans | 121,271 |  | 121,271 |  | 68,851
Substandard/Past due | Commercial & industrial |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |
2024/2023 |  |  |  |  | 3,435
2023/2022 | 7,644 |  | 7,644 |  |
2022/2021 | 20,968 |  | 20,968 |  |
2021/2020 | 4,747 |  | 4,747 |  |
Revolving | 12,285 |  | 12,285 |  | 3,499
Total loans | 45,644 |  | 45,644 |  | 6,934
Substandard/Past due | Commercial |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |
2023/2022 |  |  |  |  | 40,954
2022/2021 | 24,000 |  | 24,000 |  |
Total loans | 24,000 |  | 24,000 |  | 40,954
Substandard/Past due | Multi-family |  |  |  |  |
LOANS AND ALLOWANCE FOR CREDIT LOSSES |  |  |  |  |
2022/2021 | 30,300 |  | 30,300 |  | 20,939
2021/2020 | 20,939 |  | 20,939 |  |
Total loans | $ 51,239 |  | $ 51,239 |  | $ 20,939

X
- Definition Amortized cost excluding accrued interest, before allowance for credit loss, fee, and loan in process, of financing receivable. + References No definition available. + Details
Name: | mcb_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossesAndLoanBeforeFeeGross
Namespace Prefix: | mcb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Number of financing receivables (excluding accrued interest) that have been modified by troubled debt restructurings. + References No definition available. + Details
Name: | mcb_FinancingReceivableExcludingAccruedInterestModificationsNumberOfContracts
Namespace Prefix: | mcb_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amortized cost excluding accrued interest, of financing receivable originated more than five years prior to current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost excluding accrued interest, of financing receivable that can be withdrawn, repaid, and redrawn. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestRevolving
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost excluding accrued interest, of financing receivable originated four years prior to current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost excluding accrued interest, of financing receivable originated three years prior to current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost excluding accrued interest, of financing receivable originated in current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost excluding accrued interest, of financing receivable originated two years prior to current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost excluding accrued interest of financing receivable originated in fiscal year prior to current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Percentage of decrease in weighted average contractual interest rate of financing receivable modified for debtor experiencing financial difficulty. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 12A -Publisher FASB -URI https://asc.fasb.org/1943274/2147481933/310-10-55-12A + Details
Name: | us-gaap_FinancingReceivableModifiedWeightedAverageInterestRateDecreaseFromModification
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Period of increase in weighted average maturity of financing receivable modified for debtor experiencing financial difficulty, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 12A -Publisher FASB -URI https://asc.fasb.org/1943274/2147481933/310-10-55-12A + Details
Name: | us-gaap_FinancingReceivableModifiedWeightedAverageTermIncreaseFromModification
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
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://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 29 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-29 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-5 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 + Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancialAssetPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancialAssetNotPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=mcb_RealEstatePortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialRealEstatePortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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_FinancingReceivablePortfolioSegmentAxis=us-gaap_ConsumerPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_CommercialRealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CollateralAxis=us-gaap_CommercialRealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ConstructionLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=mcb_MultifamilyRealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CollateralAxis=mcb_MultifamilyRealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=mcb_OneToFourFamilyRealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=mcb_ChargeOffMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_PassMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_SpecialMentionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_SubstandardMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |