XML 100 R86.htm IDEA: XBRL DOCUMENT
v3.3.1.900

Note 14 - Employee Benefits (Details) - Stocks Options Outstanding by Grant Date - $ / shares | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Note 14 - Employee Benefits (Details) - Stocks Options Outstanding by Grant Date [Line Items] |  |  |
Outstanding, shares (in Shares) | 31,949 | 46,451 | 58,581
Outstanding, average exercise price | $ 25.03 | $ 27.90 | $ 28.38
Exercisable, shares (in Shares) | 31,949 | 46,451 |
Exercisable, average exercise price | $ 25.03 | $ 27.90 |
Granted December 10, 2006 [Member] |  |  |
Note 14 - Employee Benefits (Details) - Stocks Options Outstanding by Grant Date [Line Items] |  |  |
Exercise price | $ 40.24 |  |
Outstanding, shares (in Shares) | 2,625 |  |
Outstanding, contractual average life | 343 days |  |
Outstanding, average exercise price | $ 40.24 |  |
Exercisable, shares (in Shares) | 2,625 |  |
Exercisable, average exercise price | $ 40.24 |  |
Granted May 16, 2007 [Member] |  |  |
Note 14 - Employee Benefits (Details) - Stocks Options Outstanding by Grant Date [Line Items] |  |  |
Exercise price | $ 37.48 |  |
Outstanding, shares (in Shares) | 1,337 |  |
Outstanding, contractual average life | 1 year 135 days |  |
Outstanding, average exercise price | $ 37.48 |  |
Exercisable, shares (in Shares) | 1,337 |  |
Exercisable, average exercise price | $ 37.48 |  |
Granted December 10, 2007 [Member] |  |  |
Note 14 - Employee Benefits (Details) - Stocks Options Outstanding by Grant Date [Line Items] |  |  |
Exercise price | $ 37.00 |  |
Outstanding, shares (in Shares) | 1,950 |  |
Outstanding, contractual average life | 1 year 343 days |  |
Outstanding, average exercise price | $ 37.00 |  |
Exercisable, shares (in Shares) | 1,950 |  |
Exercisable, average exercise price | $ 37.00 |  |
Granted January 2, 2008 [Member] |  |  |
Note 14 - Employee Benefits (Details) - Stocks Options Outstanding by Grant Date [Line Items] |  |  |
Exercise price | $ 36.25 |  |
Outstanding, shares (in Shares) | 1,337 |  |
Outstanding, contractual average life | 2 years |  |
Outstanding, average exercise price | $ 36.25 |  |
Exercisable, shares (in Shares) | 1,337 |  |
Exercisable, average exercise price | $ 36.25 |  |
Granted November 10, 2008 [Member] |  |  |
Note 14 - Employee Benefits (Details) - Stocks Options Outstanding by Grant Date [Line Items] |  |  |
Exercise price | $ 23.00 |  |
Outstanding, shares (in Shares) | 16,500 |  |
Outstanding, contractual average life | 2 years 313 days |  |
Outstanding, average exercise price | $ 23.00 |  |
Exercisable, shares (in Shares) | 16,500 |  |
Exercisable, average exercise price | $ 23.00 |  |
Granted May 9, 2011 [Member] |  |  |
Note 14 - Employee Benefits (Details) - Stocks Options Outstanding by Grant Date [Line Items] |  |  |
Exercise price | $ 17.55 |  |
Outstanding, shares (in Shares) | 8,200 |  |
Outstanding, contractual average life | 5 years 127 days |  |
Outstanding, average exercise price | $ 17.55 |  |
Exercisable, shares (in Shares) | 8,200 |  |
Exercisable, average exercise price | $ 17.55 |  |

X
- References No definition available. + Details
Name: | mbcn_Note14EmployeeBenefitsDetailsStocksOptionsOutstandingbyGrantDateLineItems
Namespace Prefix: | mbcn_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of options outstanding, including both vested and non-vested options. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options. + References No definition available. + Details
Name: | us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Weighted average remaining contractual term for option awards outstanding, 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/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_PlanNameAxis=mbcn_GrantedDecember102006Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=mbcn_GrantedMay162007Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=mbcn_GrantedDecember102007Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=mbcn_GrantedJanuary22008Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=mbcn_GrantedNovember102008Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=mbcn_GrantedMay92011Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |