Quarterly report pursuant to Section 13 or 15(d)

OTHER REAL ESTATE OWNED (Details)

v2.4.1.9
OTHER REAL ESTATE OWNED (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 12 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Dec. 31, 2014
Period-end other real estate owned [Roll Forward]      
Beginning balance $ 43,071mcbc_OtherRealEstateAndForeclosedAssetsGross $ 53,501mcbc_OtherRealEstateAndForeclosedAssetsGross $ 53,501mcbc_OtherRealEstateAndForeclosedAssetsGross
Additions, transfers from loans 699us-gaap_TransferToOtherRealEstate 554us-gaap_TransferToOtherRealEstate 4,932us-gaap_TransferToOtherRealEstate
Proceeds from sales of other real estate owned (1,452)us-gaap_ProceedsFromSaleOfForeclosedAssets (3,501)us-gaap_ProceedsFromSaleOfForeclosedAssets (12,487)us-gaap_ProceedsFromSaleOfForeclosedAssets
Valuation allowance reversal upon sale (447)mcbc_OtherRealEstateAndForeclosedAssetsValuationReversalUponSale (1,948)mcbc_OtherRealEstateAndForeclosedAssetsValuationReversalUponSale (3,499)mcbc_OtherRealEstateAndForeclosedAssetsValuationReversalUponSale
Gain (loss) on sale of other real estate owned 67mcbc_GainsLossesOnSalesOfOtherRealEstateOwned 484mcbc_GainsLossesOnSalesOfOtherRealEstateOwned 624mcbc_GainsLossesOnSalesOfOtherRealEstateOwned
Other real estate owned, gross 41,938mcbc_OtherRealEstateAndForeclosedAssetsGross 49,090mcbc_OtherRealEstateAndForeclosedAssetsGross 43,071mcbc_OtherRealEstateAndForeclosedAssetsGross
Less: valuation allowance (14,900)us-gaap_RealEstateOwnedValuationAllowance (15,055)us-gaap_RealEstateOwnedValuationAllowance (14,829)us-gaap_RealEstateOwnedValuationAllowance
Ending balance 27,038us-gaap_OtherRealEstateAndForeclosedAssets 34,035us-gaap_OtherRealEstateAndForeclosedAssets 28,242us-gaap_OtherRealEstateAndForeclosedAssets
Activity in valuation allowance [Roll Forward]      
Beginning balance 14,829us-gaap_RealEstateOwnedValuationAllowance 16,705us-gaap_RealEstateOwnedValuationAllowance 16,705us-gaap_RealEstateOwnedValuationAllowance
Additions charged to expense 518us-gaap_RealEstateOwnedValuationAllowanceProvision1 298us-gaap_RealEstateOwnedValuationAllowanceProvision1  
Reversals upon sale (447)us-gaap_RealEstateOwnedValuationAllowanceAmountsApplied (1,948)us-gaap_RealEstateOwnedValuationAllowanceAmountsApplied  
Ending balance $ 14,900us-gaap_RealEstateOwnedValuationAllowance $ 15,055us-gaap_RealEstateOwnedValuationAllowance $ 14,829us-gaap_RealEstateOwnedValuationAllowance