Quarterly report pursuant to Section 13 or 15(d)

DEPOSITS (Details)

v2.4.1.9
DEPOSITS (Details) (USD $)
Mar. 31, 2015
Dec. 31, 2014
Summary of deposit [Abstract]    
Noninterest-bearing demand $ 373,215,000us-gaap_NoninterestBearingDepositLiabilities $ 404,143,000us-gaap_NoninterestBearingDepositLiabilities
Interest bearing demand 355,184,000us-gaap_DemandDepositAccounts 340,053,000us-gaap_DemandDepositAccounts
Savings and money market accounts 475,931,000mcbc_DepositsSavingsAndMoneyMarketDeposits 442,246,000mcbc_DepositsSavingsAndMoneyMarketDeposits
Certificates of deposit 116,186,000us-gaap_InterestBearingDomesticDepositCertificatesOfDeposits 119,883,000us-gaap_InterestBearingDomesticDepositCertificatesOfDeposits
Total deposits 1,320,516,000us-gaap_Deposits 1,306,325,000us-gaap_Deposits
Certificate of deposits, $100,000 or more denominations 50,500,000us-gaap_TimeDeposits100000OrMore 50,100,000us-gaap_TimeDeposits100000OrMore
Denominations amount of certificates of deposit $ 100,000mcbc_DenominationsAmountOfCertificatesOfDeposit $ 100,000mcbc_DenominationsAmountOfCertificatesOfDeposit