XML 62 R50.htm IDEA: XBRL DOCUMENT v3.5.0.2

Note 7 - Troubled Debt Restructurings (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($)
Extended Maturity [Member] | Commercial And Industrial [Member]
Number of contracts	1		2	1
Extended Maturity [Member] | Real Estate Mortgage Portfolio Segment [Member] | Residential Loan [Member]
Number of contracts	1	1	1	1
Extended Maturity [Member] | Real Estate Mortgage Portfolio Segment [Member] | Commercial Loans [Member]
Number of contracts	1		1
Extended Maturity [Member] | Real Estate Construction Porfolio Segment [Member]
Number of contracts		1		1
Other Restructurings [Member] | Commercial And Industrial [Member]
Number of contracts		1		1
Other Restructurings [Member] | Real Estate Mortgage Portfolio Segment [Member] | Residential Loan [Member]
Number of contracts				1
Other Restructurings [Member] | Real Estate Construction Porfolio Segment [Member]
Number of contracts
Commercial And Industrial [Member]
Number of contracts	1	1	2	2
Pre-modification outstanding recorded investment	$ 3	$ 64	$ 169	$ 111
Post-modification outstanding recorded investment	$ 3	$ 64	$ 169	$ 111
Real Estate Mortgage Portfolio Segment [Member] | Residential Loan [Member]
Number of contracts	1	1	1	2
Pre-modification outstanding recorded investment	$ 58	$ 59	$ 58	$ 235
Post-modification outstanding recorded investment	$ 58	$ 59	$ 58	$ 254
Real Estate Mortgage Portfolio Segment [Member] | Commercial Loans [Member]
Number of contracts	1		1
Pre-modification outstanding recorded investment	$ 311		$ 311
Post-modification outstanding recorded investment	$ 311		$ 311
Real Estate Construction Porfolio Segment [Member]
Number of contracts		1		1
Pre-modification outstanding recorded investment		$ 181		$ 181
Post-modification outstanding recorded investment		$ 181		$ 181

X

- Definition

Number of financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953676-111524

+ Details

Name:	us-gaap_FinancingReceivableModificationsNumberOfContracts2
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Post-modification amount of investment in financing receivables modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953676-111524

+ Details

Name:	us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Pre-modification amount of investment in financing receivables modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953676-111524

+ Details

Name:	us-gaap_FinancingReceivableModificationsPreModificationRecordedInvestment2
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

Name:	us-gaap_LoanRestructuringModificationAxis=us-gaap_ExtendedMaturityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=mbcn_CommercialAndIndustrialMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=mbcn_RealEstateMortgagePortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=mbcn_ResidentialLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=mbcn_CommercialLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=mbcn_RealEstateConstructionPorfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LoanRestructuringModificationAxis=mbcn_OtherRestructuringsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: