2.4.0.8040 - Disclosure - Note 5 - Credit Quality and the Allowance for Loan and Lease Losses (Details) - Impaired LoanstruefalseIn Thousands, unless otherwise specifiedfalse1false USDfalsefalse$c413_From1Jan2013To30Jun2013_ConstructionAndLandDevelopmentMember_ImpairedLoansWithAnAllowanceRecordedMember_AverageRecordedInvestmentinImpairedLoansMemberhttp://www.sec.gov/CIK0001129920duration2013-01-01T00:00:002013-06-30T00:00:00usdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$2false USDfalsefalse$c745_From1Jan2012To30Jun2012_ConstructionAndLandDevelopmentMember_ImpairedLoansWithAnAllowanceRecordedMember_AverageRecordedInvestmentinImpairedLoansMemberhttp://www.sec.gov/CIK0001129920duration2012-01-01T00:00:002012-06-30T00:00:00usdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$3false USDfalsefalse$c563_From1Jan2012To31Dec2012_ConstructionAndLandDevelopmentMember_ImpairedLoansWithAnAllowanceRecordedMember_AverageRecordedInvestmentinImpairedLoansMemberhttp://www.sec.gov/CIK0001129920duration2012-01-01T00:00:002012-12-31T00:00:00usdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$1true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:2false 5us-gaap_NotesReceivableNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse250839000250839USD$falsetruefalse2truefalsefalse223631000223631USD$falsetruefalse3truefalsefalse245289000245289USD$falsetruefalsexbrli:monetaryItemTypemonetaryNet amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3 -Article 5 false2Total Loans Held for Investment3false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4false USDtruefalse$c299_AsOf30Jun2013_ConstructionAndLandDevelopmentMember_ImpairedLoansWithAnAllowanceRecordedMember_RecordedInvestmentMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRecorded Investment [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RecordedInvestmentMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseConstruction and Land Development [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ConstructionAndLandDevelopmentMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With An Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithAnAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Recorded Investment [Member] | Construction and Land Development [Member] | Impaired Loans With An Allowance Recorded (Member)4true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:5false 5us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestmentus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse288000288USD$falsefalsefalse2truefalsefalse199000199USD$falsefalsefalse3truefalsefalse385000385USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of investment in impaired financing receivables for which there is a related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953550-111524 false2Impaired Loans With an Allowance Recorded6false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse7false USDtruefalse$c442_AsOf31Dec2012_ConstructionAndLandDevelopmentMember_ImpairedLoansWithNoAllowanceRecordedMember_RecordedInvestmentMemberhttp://www.sec.gov/CIK0001129920instant2012-12-31T00:00:000001-01-01T00:00:00falsefalseRecorded Investment [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RecordedInvestmentMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseConstruction and Land Development [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ConstructionAndLandDevelopmentMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With No Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithNoAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Recorded Investment [Member] | Construction and Land Development [Member] | Impaired Loans With No Allowance Recorded (Member)7true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:8false 5us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestmentus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2truefalsefalse544000544USD$falsefalsefalse3truefalsefalse170000170USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of investment in impaired financing receivables for which there is no related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953550-111524 false2Impaired Loans With No Allowance Recorded9false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse9false USDtruefalse$c309_AsOf30Jun2013_ConstructionAndLandDevelopmentMember_IndividuallyEvaluatedForImpairmentMember_RecordedInvestmentMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRecorded Investment [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RecordedInvestmentMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseConstruction and Land Development [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ConstructionAndLandDevelopmentMembermisn_LoansAxisexplicitMemberfalsefalseIndividually Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_IndividuallyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Recorded Investment [Member] | Construction and Land Development [Member] | Individually Evaluated for Impairment [Member]10true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:11false 5us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairmentus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse288000288USD$falsefalsefalse2truefalsefalse743000743USD$falsefalsefalse3truefalsefalse555000555USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe balance of financing receivables that were individually evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Total Loans Individually Evaluated For Impairment12false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse12false USDtruefalse$c316_AsOf30Jun2013_ConstructionAndLandDevelopmentMember_CollectivelyEvaluatedForImpairmentMember_RecordedInvestmentMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRecorded Investment [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RecordedInvestmentMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseConstruction and Land Development [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ConstructionAndLandDevelopmentMembermisn_LoansAxisexplicitMemberfalsefalseCollectively Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_CollectivelyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Recorded Investment [Member] | Construction and Land Development [Member] | Collectively Evaluated for Impairment [Member]13true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:14false 5us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairmentus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse92360009236USD$falsefalsefalse2truefalsefalse1198800011988USD$falsefalsefalse3truefalsefalse89850008985USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe balance of financing receivables that were collectively evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Loans Collectively Evaluated For Impairment15false 5us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairmentus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse92360009236USD$falsefalsefalse2truefalsefalse1198800011988USD$falsefalsefalse3truefalsefalse89850008985USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe balance of financing receivables that were collectively evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Loans Collectively Evaluated For Impairment16false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse15false USDtruefalse$c324_AsOf30Jun2013_ConstructionAndLandDevelopmentMember_AcquiredWithDeterioratedCreditQualityMember_RecordedInvestmentMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRecorded Investment [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RecordedInvestmentMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseConstruction and Land Development [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ConstructionAndLandDevelopmentMembermisn_LoansAxisexplicitMemberfalsefalseAcquired with Deteriorated Credit Quality [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AcquiredWithDeterioratedCreditQualityMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Recorded Investment [Member] | Construction and Land Development [Member] | Acquired with Deteriorated Credit Quality [Member]17true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:18false 5misn_FinancingReceivableAcquiredwithDeterioratedCreditQualityRecordedInvestmentmisn_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse20170002017USD$falsefalsefalse2truefalsefalse28100002810USD$falsefalsefalse3truefalsefalse24550002455USD$falsefalsefalsexbrli:monetaryItemTypemonetaryFinancing Receivable, Acquired with Deteriorated Credit QualityNo definition available.false2Loans Acquired With Deteriorated Credit Quality19false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse18false USDtruefalse$c331_AsOf30Jun2013_ConstructionAndLandDevelopmentMember_LoansHeldforInvestmentMember_RecordedInvestmentMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRecorded Investment [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RecordedInvestmentMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseConstruction and Land Development [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ConstructionAndLandDevelopmentMembermisn_LoansAxisexplicitMemberfalsefalseLoans Held for Investment (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_LoansHeldforInvestmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Recorded Investment [Member] | Construction and Land Development [Member] | Loans Held for Investment (Member)20true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:21false 5us-gaap_NotesReceivableNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse1154100011541USD$falsefalsefalse2truefalsefalse1554100015541USD$falsefalsefalse3truefalsefalse1199500011995USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3 -Article 5 false2Total Loans Held for Investment22false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse21false USDtruefalse$c300_AsOf30Jun2013_OwnerOccupiedMember_ImpairedLoansWithAnAllowanceRecordedMember_RecordedInvestmentMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRecorded Investment [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RecordedInvestmentMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseOwner Occupied [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_OwnerOccupiedMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With An Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithAnAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Recorded Investment [Member] | Owner Occupied [Member] | Impaired Loans With An Allowance Recorded (Member)23true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:24false 5us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestmentus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse124000124USD$falsefalsefalse2truefalsefalse581000581USD$falsefalsefalse3truefalsefalse686000686USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of investment in impaired financing receivables for which there is a related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953550-111524 false2Impaired Loans With an Allowance Recorded25false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse24false USDtruefalse$c306_AsOf30Jun2013_OwnerOccupiedMember_ImpairedLoansWithNoAllowanceRecordedMember_RecordedInvestmentMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRecorded Investment [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RecordedInvestmentMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseOwner Occupied [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_OwnerOccupiedMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With No Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithNoAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Recorded Investment [Member] | Owner Occupied [Member] | Impaired Loans With No Allowance Recorded (Member)26true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:27false 5us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestmentus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse20430002043USD$falsefalsefalse2truefalsefalse12940001294USD$falsefalsefalse3truefalsefalse15990001599USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of investment in impaired financing receivables for which there is no related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953550-111524 false2Impaired Loans With No Allowance Recorded28false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse27false USDtruefalse$c310_AsOf30Jun2013_OwnerOccupiedMember_IndividuallyEvaluatedForImpairmentMember_RecordedInvestmentMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRecorded Investment [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RecordedInvestmentMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseOwner Occupied [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_OwnerOccupiedMembermisn_LoansAxisexplicitMemberfalsefalseIndividually Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_IndividuallyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Recorded Investment [Member] | Owner Occupied [Member] | Individually Evaluated for Impairment [Member]29true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:30false 5us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairmentus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse21670002167USD$falsefalsefalse2truefalsefalse18750001875USD$falsefalsefalse3truefalsefalse22850002285USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe balance of financing receivables that were individually evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Total Loans Individually Evaluated For Impairment31false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse30false USDtruefalse$c317_AsOf30Jun2013_OwnerOccupiedMember_CollectivelyEvaluatedForImpairmentMember_RecordedInvestmentMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRecorded Investment [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RecordedInvestmentMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseOwner Occupied [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_OwnerOccupiedMembermisn_LoansAxisexplicitMemberfalsefalseCollectively Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_CollectivelyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Recorded Investment [Member] | Owner Occupied [Member] | Collectively Evaluated for Impairment [Member]32true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:33false 5us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairmentus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse5124200051242USD$falsefalsefalse2truefalsefalse4910000049100USD$falsefalsefalse3truefalsefalse5183700051837USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe balance of financing receivables that were collectively evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Loans Collectively Evaluated For Impairment34false 5us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairmentus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse5124200051242USD$falsefalsefalse2truefalsefalse4910000049100USD$falsefalsefalse3truefalsefalse5183700051837USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe balance of financing receivables that were collectively evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Loans Collectively Evaluated For Impairment35false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse33false USDtruefalse$c325_AsOf30Jun2013_OwnerOccupiedMember_AcquiredWithDeterioratedCreditQualityMember_RecordedInvestmentMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRecorded Investment [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RecordedInvestmentMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseOwner Occupied [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_OwnerOccupiedMembermisn_LoansAxisexplicitMemberfalsefalseAcquired with Deteriorated Credit Quality [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AcquiredWithDeterioratedCreditQualityMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Recorded Investment [Member] | Owner Occupied [Member] | Acquired with Deteriorated Credit Quality [Member]36true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:37false 5misn_FinancingReceivableAcquiredwithDeterioratedCreditQualityRecordedInvestmentmisn_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse1548900015489USD$falsefalsefalse2truefalsefalse1621300016213USD$falsefalsefalse3truefalsefalse1690600016906USD$falsefalsefalsexbrli:monetaryItemTypemonetaryFinancing Receivable, Acquired with Deteriorated Credit QualityNo definition available.false2Loans Acquired With Deteriorated Credit Quality38false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse36false USDtruefalse$c332_AsOf30Jun2013_OwnerOccupiedMember_LoansHeldforInvestmentMember_RecordedInvestmentMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRecorded Investment [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RecordedInvestmentMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseOwner Occupied [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_OwnerOccupiedMembermisn_LoansAxisexplicitMemberfalsefalseLoans Held for Investment (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_LoansHeldforInvestmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Recorded Investment [Member] | Owner Occupied [Member] | Loans Held for Investment (Member)39true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:40false 5us-gaap_NotesReceivableNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse6889800068898USD$falsefalsefalse2truefalsefalse6718800067188USD$falsefalsefalse3truefalsefalse7102800071028USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3 -Article 5 false2Total Loans Held for Investment41false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse39false USDtruefalse$c301_AsOf30Jun2013_NonOwnerOccupiedMember_ImpairedLoansWithAnAllowanceRecordedMember_RecordedInvestmentMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRecorded Investment [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RecordedInvestmentMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseNon Owner Occupied [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_NonOwnerOccupiedMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With An Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithAnAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Recorded Investment [Member] | Non Owner Occupied [Member] | Impaired Loans With An Allowance Recorded (Member)42true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:43false 5us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestmentus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse717000717USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse749000749USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of investment in impaired financing receivables for which there is a related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953550-111524 false2Impaired Loans With an Allowance Recorded44false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse42false USDtruefalse$c444_AsOf31Dec2012_NonOwnerOccupiedMember_ImpairedLoansWithNoAllowanceRecordedMember_RecordedInvestmentMemberhttp://www.sec.gov/CIK0001129920instant2012-12-31T00:00:000001-01-01T00:00:00falsefalseRecorded Investment [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RecordedInvestmentMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseNon Owner Occupied [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_NonOwnerOccupiedMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With No Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithNoAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Recorded Investment [Member] | Non Owner Occupied [Member] | Impaired Loans With No Allowance Recorded (Member)45true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:46false 5us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestmentus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of investment in impaired financing receivables for which there is no related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953550-111524 false2Impaired Loans With No Allowance Recorded47false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse44false USDtruefalse$c311_AsOf30Jun2013_NonOwnerOccupiedMember_IndividuallyEvaluatedForImpairmentMember_RecordedInvestmentMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRecorded Investment [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RecordedInvestmentMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseNon Owner Occupied [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_NonOwnerOccupiedMembermisn_LoansAxisexplicitMemberfalsefalseIndividually Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_IndividuallyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Recorded Investment [Member] | Non Owner Occupied [Member] | Individually Evaluated for Impairment [Member]48true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:49false 5us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairmentus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse717000717USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse749000749USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe balance of financing receivables that were individually evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Total Loans Individually Evaluated For Impairment50false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse47false USDtruefalse$c318_AsOf30Jun2013_NonOwnerOccupiedMember_CollectivelyEvaluatedForImpairmentMember_RecordedInvestmentMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRecorded Investment [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RecordedInvestmentMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseNon Owner Occupied [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_NonOwnerOccupiedMembermisn_LoansAxisexplicitMemberfalsefalseCollectively Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_CollectivelyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Recorded Investment [Member] | Non Owner Occupied [Member] | Collectively Evaluated for Impairment [Member]51true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:52false 5us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairmentus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse6268500062685USD$falsefalsefalse2truefalsefalse5294000052940USD$falsefalsefalse3truefalsefalse5705800057058USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe balance of financing receivables that were collectively evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Loans Collectively Evaluated For Impairment53false 5us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairmentus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse6268500062685USD$falsefalsefalse2truefalsefalse5294000052940USD$falsefalsefalse3truefalsefalse5705800057058USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe balance of financing receivables that were collectively evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Loans Collectively Evaluated For Impairment54false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse50false USDtruefalse$c326_AsOf30Jun2013_NonOwnerOccupiedMember_AcquiredWithDeterioratedCreditQualityMember_RecordedInvestmentMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRecorded Investment [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RecordedInvestmentMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseNon Owner Occupied [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_NonOwnerOccupiedMembermisn_LoansAxisexplicitMemberfalsefalseAcquired with Deteriorated Credit Quality [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AcquiredWithDeterioratedCreditQualityMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Recorded Investment [Member] | Non Owner Occupied [Member] | Acquired with Deteriorated Credit Quality [Member]55true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:56false 5misn_FinancingReceivableAcquiredwithDeterioratedCreditQualityRecordedInvestmentmisn_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse1161300011613USD$falsefalsefalse2truefalsefalse1156400011564USD$falsefalsefalse3truefalsefalse1155400011554USD$falsefalsefalsexbrli:monetaryItemTypemonetaryFinancing Receivable, Acquired with Deteriorated Credit QualityNo definition available.false2Loans Acquired With Deteriorated Credit Quality57false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse53false USDtruefalse$c333_AsOf30Jun2013_NonOwnerOccupiedMember_LoansHeldforInvestmentMember_RecordedInvestmentMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRecorded Investment [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RecordedInvestmentMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseNon Owner Occupied [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_NonOwnerOccupiedMembermisn_LoansAxisexplicitMemberfalsefalseLoans Held for Investment (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_LoansHeldforInvestmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Recorded Investment [Member] | Non Owner Occupied [Member] | Loans Held for Investment (Member)58true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:59false 5us-gaap_NotesReceivableNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse7501500075015USD$falsefalsefalse2truefalsefalse6450400064504USD$falsefalsefalse3truefalsefalse6936100069361USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3 -Article 5 false2Total Loans Held for Investment60false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse56false USDtruefalse$c302_AsOf30Jun2013_ResidentialRealEstateMember_ImpairedLoansWithAnAllowanceRecordedMember_RecordedInvestmentMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRecorded Investment [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RecordedInvestmentMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseResidential Real Estate [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_ResidentialRealEstateMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With An Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithAnAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Recorded Investment [Member] | Residential Real Estate [Member] | Impaired Loans With An Allowance Recorded (Member)61true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:62false 5us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestmentus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse964000964USD$falsefalsefalse2truefalsefalse185000185USD$falsefalsefalse3truefalsefalse894000894USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of investment in impaired financing receivables for which there is a related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953550-111524 false2Impaired Loans With an Allowance Recorded63false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse59false USDtruefalse$c445_AsOf31Dec2012_ResidentialRealEstateMember_ImpairedLoansWithNoAllowanceRecordedMember_RecordedInvestmentMemberhttp://www.sec.gov/CIK0001129920instant2012-12-31T00:00:000001-01-01T00:00:00falsefalseRecorded Investment [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RecordedInvestmentMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseResidential Real Estate [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_ResidentialRealEstateMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With No Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithNoAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Recorded Investment [Member] | Residential Real Estate [Member] | Impaired Loans With No Allowance Recorded (Member)64true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:65false 5us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestmentus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of investment in impaired financing receivables for which there is no related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953550-111524 false2Impaired Loans With No Allowance Recorded66false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse61false USDtruefalse$c312_AsOf30Jun2013_ResidentialRealEstateMember_IndividuallyEvaluatedForImpairmentMember_RecordedInvestmentMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRecorded Investment [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RecordedInvestmentMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseResidential Real Estate [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_ResidentialRealEstateMembermisn_LoansAxisexplicitMemberfalsefalseIndividually Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_IndividuallyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Recorded Investment [Member] | Residential Real Estate [Member] | Individually Evaluated for Impairment [Member]67true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:68false 5us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairmentus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse964000964USD$falsefalsefalse2truefalsefalse185000185USD$falsefalsefalse3truefalsefalse894000894USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe balance of financing receivables that were individually evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Total Loans Individually Evaluated For Impairment69false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse64false USDtruefalse$c319_AsOf30Jun2013_ResidentialRealEstateMember_CollectivelyEvaluatedForImpairmentMember_RecordedInvestmentMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRecorded Investment [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RecordedInvestmentMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseResidential Real Estate [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_ResidentialRealEstateMembermisn_LoansAxisexplicitMemberfalsefalseCollectively Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_CollectivelyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Recorded Investment [Member] | Residential Real Estate [Member] | Collectively Evaluated for Impairment [Member]70true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:71false 5us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairmentus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse2311400023114USD$falsefalsefalse2truefalsefalse2821300028213USD$falsefalsefalse3truefalsefalse2561300025613USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe balance of financing receivables that were collectively evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Loans Collectively Evaluated For Impairment72false 5us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairmentus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse2311400023114USD$falsefalsefalse2truefalsefalse2821300028213USD$falsefalsefalse3truefalsefalse2561300025613USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe balance of financing receivables that were collectively evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Loans Collectively Evaluated For Impairment73false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse67false USDtruefalse$c327_AsOf30Jun2013_ResidentialRealEstateMember_AcquiredWithDeterioratedCreditQualityMember_RecordedInvestmentMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRecorded Investment [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RecordedInvestmentMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseResidential Real Estate [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_ResidentialRealEstateMembermisn_LoansAxisexplicitMemberfalsefalseAcquired with Deteriorated Credit Quality [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AcquiredWithDeterioratedCreditQualityMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Recorded Investment [Member] | Residential Real Estate [Member] | Acquired with Deteriorated Credit Quality [Member]74true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:75false 5misn_FinancingReceivableAcquiredwithDeterioratedCreditQualityRecordedInvestmentmisn_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse44040004404USD$falsefalsefalse2truefalsefalse48430004843USD$falsefalsefalse3truefalsefalse45340004534USD$falsefalsefalsexbrli:monetaryItemTypemonetaryFinancing Receivable, Acquired with Deteriorated Credit QualityNo definition available.false2Loans Acquired With Deteriorated Credit Quality76false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse70false USDtruefalse$c334_AsOf30Jun2013_ResidentialRealEstateMember_LoansHeldforInvestmentMember_RecordedInvestmentMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRecorded Investment [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RecordedInvestmentMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseResidential Real Estate [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_ResidentialRealEstateMembermisn_LoansAxisexplicitMemberfalsefalseLoans Held for Investment (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_LoansHeldforInvestmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Recorded Investment [Member] | Residential Real Estate [Member] | Loans Held for Investment (Member)77true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:78false 5us-gaap_NotesReceivableNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse2848200028482USD$falsefalsefalse2truefalsefalse3324100033241USD$falsefalsefalse3truefalsefalse3104100031041USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3 -Article 5 false2Total Loans Held for Investment79false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse73false USDtruefalse$c303_AsOf30Jun2013_AllOtherRealEstateMember_ImpairedLoansWithAnAllowanceRecordedMember_RecordedInvestmentMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRecorded Investment [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RecordedInvestmentMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseAll Other Real Estate [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AllOtherRealEstateMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With An Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithAnAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Recorded Investment [Member] | All Other Real Estate [Member] | Impaired Loans With An Allowance Recorded (Member)80true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:81false 5us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestmentus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse2200022USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse2900029USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of investment in impaired financing receivables for which there is a related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953550-111524 false2Impaired Loans With an Allowance Recorded82false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse76false USDtruefalse$c446_AsOf31Dec2012_AllOtherRealEstateMember_ImpairedLoansWithNoAllowanceRecordedMember_RecordedInvestmentMemberhttp://www.sec.gov/CIK0001129920instant2012-12-31T00:00:000001-01-01T00:00:00falsefalseRecorded Investment [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RecordedInvestmentMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseAll Other Real Estate [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AllOtherRealEstateMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With No Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithNoAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Recorded Investment [Member] | All Other Real Estate [Member] | Impaired Loans With No Allowance Recorded (Member)83true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:84false 5us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestmentus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of investment in impaired financing receivables for which there is no related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953550-111524 false2Impaired Loans With No Allowance Recorded85false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse78false USDtruefalse$c313_AsOf30Jun2013_AllOtherRealEstateMember_IndividuallyEvaluatedForImpairmentMember_RecordedInvestmentMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRecorded Investment [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RecordedInvestmentMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseAll Other Real Estate [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AllOtherRealEstateMembermisn_LoansAxisexplicitMemberfalsefalseIndividually Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_IndividuallyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Recorded Investment [Member] | All Other Real Estate [Member] | Individually Evaluated for Impairment [Member]86true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:87false 5us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairmentus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse2200022USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse2900029USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe balance of financing receivables that were individually evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Total Loans Individually Evaluated For Impairment88false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse81false USDtruefalse$c320_AsOf30Jun2013_AllOtherRealEstateMember_CollectivelyEvaluatedForImpairmentMember_RecordedInvestmentMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRecorded Investment [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RecordedInvestmentMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseAll Other Real Estate [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AllOtherRealEstateMembermisn_LoansAxisexplicitMemberfalsefalseCollectively Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_CollectivelyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Recorded Investment [Member] | All Other Real Estate [Member] | Collectively Evaluated for Impairment [Member]89true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:90false 5us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairmentus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse1751900017519USD$falsefalsefalse2truefalsefalse18800001880USD$falsefalsefalse3truefalsefalse83190008319USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe balance of financing receivables that were collectively evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Loans Collectively Evaluated For Impairment91false 5us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairmentus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse1751900017519USD$falsefalsefalse2truefalsefalse18800001880USD$falsefalsefalse3truefalsefalse83190008319USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe balance of financing receivables that were collectively evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Loans Collectively Evaluated For Impairment92false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse84false USDtruefalse$c470_AsOf31Dec2012_AllOtherRealEstateMember_AcquiredWithDeterioratedCreditQualityMember_RecordedInvestmentMemberhttp://www.sec.gov/CIK0001129920instant2012-12-31T00:00:000001-01-01T00:00:00falsefalseRecorded Investment [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RecordedInvestmentMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseAll Other Real Estate [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AllOtherRealEstateMembermisn_LoansAxisexplicitMemberfalsefalseAcquired with Deteriorated Credit Quality [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AcquiredWithDeterioratedCreditQualityMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Recorded Investment [Member] | All Other Real Estate [Member] | Acquired with Deteriorated Credit Quality [Member]93true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:94false 5misn_FinancingReceivableAcquiredwithDeterioratedCreditQualityRecordedInvestmentmisn_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryFinancing Receivable, Acquired with Deteriorated Credit QualityNo definition available.false2Loans Acquired With Deteriorated Credit Quality95false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse86false USDtruefalse$c335_AsOf30Jun2013_AllOtherRealEstateMember_LoansHeldforInvestmentMember_RecordedInvestmentMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRecorded Investment [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RecordedInvestmentMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseAll Other Real Estate [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AllOtherRealEstateMembermisn_LoansAxisexplicitMemberfalsefalseLoans Held for Investment (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_LoansHeldforInvestmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Recorded Investment [Member] | All Other Real Estate [Member] | Loans Held for Investment (Member)96true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:97false 5us-gaap_NotesReceivableNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse1754100017541USD$falsefalsefalse2truefalsefalse18800001880USD$falsefalsefalse3truefalsefalse83480008348USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3 -Article 5 false2Total Loans Held for Investment98false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse89false USDtruefalse$c304_AsOf30Jun2013_CommericalAndIndustrialMember_ImpairedLoansWithAnAllowanceRecordedMember_RecordedInvestmentMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRecorded Investment [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RecordedInvestmentMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseCommerical and Industrial [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_CommericalAndIndustrialMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With An Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithAnAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Recorded Investment [Member] | Commerical and Industrial [Member] | Impaired Loans With An Allowance Recorded (Member)99true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:100false 5us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestmentus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse952000952USD$falsefalsefalse2truefalsefalse326000326USD$falsefalsefalse3truefalsefalse13540001354USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of investment in impaired financing receivables for which there is a related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953550-111524 false2Impaired Loans With an Allowance Recorded101false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse92false USDtruefalse$c307_AsOf30Jun2013_CommericalAndIndustrialMember_ImpairedLoansWithNoAllowanceRecordedMember_RecordedInvestmentMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRecorded Investment [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RecordedInvestmentMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseCommerical and Industrial [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_CommericalAndIndustrialMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With No Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithNoAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Recorded Investment [Member] | Commerical and Industrial [Member] | Impaired Loans With No Allowance Recorded (Member)102true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:103false 5us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestmentus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse14730001473USD$falsefalsefalse2truefalsefalse590000590USD$falsefalsefalse3truefalsefalse12980001298USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of investment in impaired financing receivables for which there is no related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953550-111524 false2Impaired Loans With No Allowance Recorded104false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse95false USDtruefalse$c314_AsOf30Jun2013_CommericalAndIndustrialMember_IndividuallyEvaluatedForImpairmentMember_RecordedInvestmentMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRecorded Investment [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RecordedInvestmentMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseCommerical and Industrial [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_CommericalAndIndustrialMembermisn_LoansAxisexplicitMemberfalsefalseIndividually Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_IndividuallyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Recorded Investment [Member] | Commerical and Industrial [Member] | Individually Evaluated for Impairment [Member]105true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:106false 5us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairmentus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse24250002425USD$falsefalsefalse2truefalsefalse916000916USD$falsefalsefalse3truefalsefalse26520002652USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe balance of financing receivables that were individually evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Total Loans Individually Evaluated For Impairment107false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse98false USDtruefalse$c321_AsOf30Jun2013_CommericalAndIndustrialMember_CollectivelyEvaluatedForImpairmentMember_RecordedInvestmentMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRecorded Investment [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RecordedInvestmentMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseCommerical and Industrial [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_CommericalAndIndustrialMembermisn_LoansAxisexplicitMemberfalsefalseCollectively Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_CollectivelyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Recorded Investment [Member] | Commerical and Industrial [Member] | Collectively Evaluated for Impairment [Member]108true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:109false 5us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairmentus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse3742100037421USD$falsefalsefalse2truefalsefalse3055100030551USD$falsefalsefalse3truefalsefalse4573500045735USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe balance of financing receivables that were collectively evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Loans Collectively Evaluated For Impairment110false 5us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairmentus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse3742100037421USD$falsefalsefalse2truefalsefalse3055100030551USD$falsefalsefalse3truefalsefalse4573500045735USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe balance of financing receivables that were collectively evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Loans Collectively Evaluated For Impairment111false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse101false USDtruefalse$c328_AsOf30Jun2013_CommericalAndIndustrialMember_AcquiredWithDeterioratedCreditQualityMember_RecordedInvestmentMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRecorded Investment [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RecordedInvestmentMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseCommerical and Industrial [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_CommericalAndIndustrialMembermisn_LoansAxisexplicitMemberfalsefalseAcquired with Deteriorated Credit Quality [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AcquiredWithDeterioratedCreditQualityMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Recorded Investment [Member] | Commerical and Industrial [Member] | Acquired with Deteriorated Credit Quality [Member]112true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:113false 5misn_FinancingReceivableAcquiredwithDeterioratedCreditQualityRecordedInvestmentmisn_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse915000915USD$falsefalsefalse2truefalsefalse24420002442USD$falsefalsefalse3truefalsefalse967000967USD$falsefalsefalsexbrli:monetaryItemTypemonetaryFinancing Receivable, Acquired with Deteriorated Credit QualityNo definition available.false2Loans Acquired With Deteriorated Credit Quality114false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse104false USDtruefalse$c336_AsOf30Jun2013_CommericalAndIndustrialMember_LoansHeldforInvestmentMember_RecordedInvestmentMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRecorded Investment [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RecordedInvestmentMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseCommerical and Industrial [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_CommericalAndIndustrialMembermisn_LoansAxisexplicitMemberfalsefalseLoans Held for Investment (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_LoansHeldforInvestmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Recorded Investment [Member] | Commerical and Industrial [Member] | Loans Held for Investment (Member)115true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:116false 5us-gaap_NotesReceivableNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse4076100040761USD$falsefalsefalse2truefalsefalse3390900033909USD$falsefalsefalse3truefalsefalse4935400049354USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3 -Article 5 false2Total Loans Held for Investment117false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse107false USDtruefalse$c440_AsOf31Dec2012_ConsumerAndAllOtherLoansAndLeasesMember_ImpairedLoansWithAnAllowanceRecordedMember_RecordedInvestmentMemberhttp://www.sec.gov/CIK0001129920instant2012-12-31T00:00:000001-01-01T00:00:00falsefalseRecorded Investment [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RecordedInvestmentMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseConsumer and All Other Loans and Leases [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ConsumerAndAllOtherLoansAndLeasesMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With An Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithAnAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Recorded Investment [Member] | Consumer and All Other Loans and Leases [Member] | Impaired Loans With An Allowance Recorded (Member)118true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:119false 5us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestmentus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of investment in impaired financing receivables for which there is a related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953550-111524 false2Impaired Loans With an Allowance Recorded120false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse109false USDtruefalse$c448_AsOf31Dec2012_ConsumerAndAllOtherLoansAndLeasesMember_ImpairedLoansWithNoAllowanceRecordedMember_RecordedInvestmentMemberhttp://www.sec.gov/CIK0001129920instant2012-12-31T00:00:000001-01-01T00:00:00falsefalseRecorded Investment [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RecordedInvestmentMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseConsumer and All Other Loans and Leases [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ConsumerAndAllOtherLoansAndLeasesMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With No Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithNoAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Recorded Investment [Member] | Consumer and All Other Loans and Leases [Member] | Impaired Loans With No Allowance Recorded (Member)121true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:122false 5us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestmentus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of investment in impaired financing receivables for which there is no related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953550-111524 false2Impaired Loans With No Allowance Recorded123false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse111false USDtruefalse$c456_AsOf31Dec2012_ConsumerAndAllOtherLoansAndLeasesMember_IndividuallyEvaluatedForImpairmentMember_RecordedInvestmentMemberhttp://www.sec.gov/CIK0001129920instant2012-12-31T00:00:000001-01-01T00:00:00falsefalseRecorded Investment [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RecordedInvestmentMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseConsumer and All Other Loans and Leases [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ConsumerAndAllOtherLoansAndLeasesMembermisn_LoansAxisexplicitMemberfalsefalseIndividually Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_IndividuallyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Recorded Investment [Member] | Consumer and All Other Loans and Leases [Member] | Individually Evaluated for Impairment [Member]124true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:125false 5us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairmentus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe balance of financing receivables that were individually evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Total Loans Individually Evaluated For Impairment126false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse113false USDtruefalse$c322_AsOf30Jun2013_ConsumerAndAllOtherLoansAndLeasesMember_CollectivelyEvaluatedForImpairmentMember_RecordedInvestmentMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRecorded Investment [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RecordedInvestmentMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseConsumer and All Other Loans and Leases [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ConsumerAndAllOtherLoansAndLeasesMembermisn_LoansAxisexplicitMemberfalsefalseCollectively Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_CollectivelyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Recorded Investment [Member] | Consumer and All Other Loans and Leases [Member] | Collectively Evaluated for Impairment [Member]127true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:128false 5us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairmentus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse55390005539USD$falsefalsefalse2truefalsefalse29040002904USD$falsefalsefalse3truefalsefalse24350002435USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe balance of financing receivables that were collectively evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Loans Collectively Evaluated For Impairment129false 5us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairmentus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse55390005539USD$falsefalsefalse2truefalsefalse29040002904USD$falsefalsefalse3truefalsefalse24350002435USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe balance of financing receivables that were collectively evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Loans Collectively Evaluated For Impairment130false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse116false USDtruefalse$c329_AsOf30Jun2013_ConsumerAndAllOtherLoansAndLeasesMember_AcquiredWithDeterioratedCreditQualityMember_RecordedInvestmentMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRecorded Investment [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RecordedInvestmentMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseConsumer and All Other Loans and Leases [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ConsumerAndAllOtherLoansAndLeasesMembermisn_LoansAxisexplicitMemberfalsefalseAcquired with Deteriorated Credit Quality [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AcquiredWithDeterioratedCreditQualityMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Recorded Investment [Member] | Consumer and All Other Loans and Leases [Member] | Acquired with Deteriorated Credit Quality [Member]131true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:132false 5misn_FinancingReceivableAcquiredwithDeterioratedCreditQualityRecordedInvestmentmisn_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse177000177USD$falsefalsefalse2truefalsefalse184000184USD$falsefalsefalse3truefalsefalse179000179USD$falsefalsefalsexbrli:monetaryItemTypemonetaryFinancing Receivable, Acquired with Deteriorated Credit QualityNo definition available.false2Loans Acquired With Deteriorated Credit Quality133false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse119false USDtruefalse$c337_AsOf30Jun2013_ConsumerAndAllOtherLoansAndLeasesMember_LoansHeldforInvestmentMember_RecordedInvestmentMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRecorded Investment [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RecordedInvestmentMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseConsumer and All Other Loans and Leases [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ConsumerAndAllOtherLoansAndLeasesMembermisn_LoansAxisexplicitMemberfalsefalseLoans Held for Investment (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_LoansHeldforInvestmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Recorded Investment [Member] | Consumer and All Other Loans and Leases [Member] | Loans Held for Investment (Member)134true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:135false 5us-gaap_NotesReceivableNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse57160005716USD$falsefalsefalse2truefalsefalse30880003088USD$falsefalsefalse3truefalsefalse26140002614USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3 -Article 5 false2Total Loans Held for Investment136false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse122false USDtruefalse$c305_AsOf30Jun2013_ImpairedLoansWithAnAllowanceRecordedMember_RecordedInvestmentMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRecorded Investment [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RecordedInvestmentMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseImpaired Loans With An Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithAnAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Recorded Investment [Member] | Impaired Loans With An Allowance Recorded (Member)137true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:138false 5us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestmentus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse30670003067USD$falsefalsefalse2truefalsefalse12910001291USD$falsefalsefalse3truefalsefalse40970004097USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of investment in impaired financing receivables for which there is a related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953550-111524 false2Impaired Loans With an Allowance Recorded139false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse125false USDtruefalse$c308_AsOf30Jun2013_ImpairedLoansWithNoAllowanceRecordedMember_RecordedInvestmentMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRecorded Investment [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RecordedInvestmentMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseImpaired Loans With No Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithNoAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Recorded Investment [Member] | Impaired Loans With No Allowance Recorded (Member)140true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:141false 5us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestmentus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse35160003516USD$falsefalsefalse2truefalsefalse24280002428USD$falsefalsefalse3truefalsefalse30670003067USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of investment in impaired financing receivables for which there is no related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953550-111524 false2Impaired Loans With No Allowance Recorded142false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse128false USDtruefalse$c315_AsOf30Jun2013_IndividuallyEvaluatedForImpairmentMember_RecordedInvestmentMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRecorded Investment [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RecordedInvestmentMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseIndividually Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_IndividuallyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Recorded Investment [Member] | Individually Evaluated for Impairment [Member]143true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:144false 5us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairmentus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse65830006583USD$falsefalsefalse2truefalsefalse37190003719USD$falsefalsefalse3truefalsefalse71640007164USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe balance of financing receivables that were individually evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Total Loans Individually Evaluated For Impairment145false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse131false USDtruefalse$c323_AsOf30Jun2013_CollectivelyEvaluatedForImpairmentMember_RecordedInvestmentMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRecorded Investment [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RecordedInvestmentMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseCollectively Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_CollectivelyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Recorded Investment [Member] | Collectively Evaluated for Impairment [Member]146true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:147false 5us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairmentus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse206756000206756USD$falsefalsefalse2truefalsefalse177576000177576USD$falsefalsefalse3truefalsefalse199982000199982USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe balance of financing receivables that were collectively evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Loans Collectively Evaluated For Impairment148false 5us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairmentus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse206756000206756USD$falsefalsefalse2truefalsefalse177576000177576USD$falsefalsefalse3truefalsefalse199982000199982USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe balance of financing receivables that were collectively evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Loans Collectively Evaluated For Impairment149false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse134false USDtruefalse$c330_AsOf30Jun2013_AcquiredWithDeterioratedCreditQualityMember_RecordedInvestmentMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRecorded Investment [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RecordedInvestmentMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseAcquired with Deteriorated Credit Quality [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AcquiredWithDeterioratedCreditQualityMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Recorded Investment [Member] | Acquired with Deteriorated Credit Quality [Member]150true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:151false 5misn_FinancingReceivableAcquiredwithDeterioratedCreditQualityRecordedInvestmentmisn_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse3461500034615USD$falsefalsefalse2truefalsefalse3805600038056USD$falsefalsefalse3truefalsefalse3659500036595USD$falsefalsefalsexbrli:monetaryItemTypemonetaryFinancing Receivable, Acquired with Deteriorated Credit QualityNo definition available.false2Loans Acquired With Deteriorated Credit Quality152false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse137false USDtruefalse$c338_AsOf30Jun2013_LoansHeldforInvestmentMember_RecordedInvestmentMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRecorded Investment [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RecordedInvestmentMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseLoans Held for Investment (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_LoansHeldforInvestmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Recorded Investment [Member] | Loans Held for Investment (Member)153true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:154false 5us-gaap_NotesReceivableNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse247954000247954USD$falsefalsefalse2truefalsefalse219351000219351USD$falsefalsefalse3truefalsefalse243741000243741USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3 -Article 5 false2Total Loans Held for Investment155false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse140false USDtruefalse$c339_AsOf30Jun2013_ConstructionAndLandDevelopmentMember_ImpairedLoansWithAnAllowanceRecordedMember_UnpaidPrincipalBalanceMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseUnpaid Principal Balance [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_UnpaidPrincipalBalanceMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseConstruction and Land Development [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ConstructionAndLandDevelopmentMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With An Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithAnAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Unpaid Principal Balance [Member] | Construction and Land Development [Member] | Impaired Loans With An Allowance Recorded (Member)156true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:157false 5us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalanceus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse309000309USD$falsefalsefalse2truefalsefalse200000200USD$falsefalsefalse3truefalsefalse404000404USD$falsefalsefalsexbrli:monetaryItemTypemonetaryUnpaid principal balance of impaired financing receivables for which there is a related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 false2Impaired Loans With An Allowance Recorded158false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse143false USDtruefalse$c490_AsOf31Dec2012_ConstructionAndLandDevelopmentMember_ImpairedLoansWithNoAllowanceRecordedMember_UnpaidPrincipalBalanceMemberhttp://www.sec.gov/CIK0001129920instant2012-12-31T00:00:000001-01-01T00:00:00falsefalseUnpaid Principal Balance [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_UnpaidPrincipalBalanceMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseConstruction and Land Development [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ConstructionAndLandDevelopmentMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With No Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithNoAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Unpaid Principal Balance [Member] | Construction and Land Development [Member] | Impaired Loans With No Allowance Recorded (Member)159true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:160false 5us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalanceus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2truefalsefalse547000547USD$falsefalsefalse3truefalsefalse177000177USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of unpaid principal balance of impaired financing receivables for which there is no related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 false2Impaired Loans With No Allowance Recorded161false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse145false USDtruefalse$c349_AsOf30Jun2013_ConstructionAndLandDevelopmentMember_IndividuallyEvaluatedForImpairmentMember_UnpaidPrincipalBalanceMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseUnpaid Principal Balance [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_UnpaidPrincipalBalanceMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseConstruction and Land Development [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ConstructionAndLandDevelopmentMembermisn_LoansAxisexplicitMemberfalsefalseIndividually Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_IndividuallyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Unpaid Principal Balance [Member] | Construction and Land Development [Member] | Individually Evaluated for Impairment [Member]162true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:163false 5us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalanceus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse309000309USD$falsefalsefalse2truefalsefalse747000747USD$falsefalsefalse3truefalsefalse581000581USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 false2Total Loans Individually Evaluated For Impairment164false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse148false USDtruefalse$c356_AsOf30Jun2013_ConstructionAndLandDevelopmentMember_CollectivelyEvaluatedForImpairmentMember_UnpaidPrincipalBalanceMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseUnpaid Principal Balance [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_UnpaidPrincipalBalanceMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseConstruction and Land Development [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ConstructionAndLandDevelopmentMembermisn_LoansAxisexplicitMemberfalsefalseCollectively Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_CollectivelyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Unpaid Principal Balance [Member] | Construction and Land Development [Member] | Collectively Evaluated for Impairment [Member]165true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:166false 5us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairmentus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse92360009236USD$falsefalsefalse2truefalsefalse1198800011988USD$falsefalsefalse3truefalsefalse89850008985USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe balance of financing receivables that were collectively evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Loans Collectively Evaluated For Impairment167false 5us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairmentus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse92360009236USD$falsefalsefalse2truefalsefalse1198800011988USD$falsefalsefalse3truefalsefalse89850008985USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe balance of financing receivables that were collectively evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Loans Collectively Evaluated For Impairment168false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse151false USDtruefalse$c364_AsOf30Jun2013_ConstructionAndLandDevelopmentMember_AcquiredWithDeterioratedCreditQualityMember_UnpaidPrincipalBalanceMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseUnpaid Principal Balance [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_UnpaidPrincipalBalanceMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseConstruction and Land Development [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ConstructionAndLandDevelopmentMembermisn_LoansAxisexplicitMemberfalsefalseAcquired with Deteriorated Credit Quality [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AcquiredWithDeterioratedCreditQualityMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Unpaid Principal Balance [Member] | Construction and Land Development [Member] | Acquired with Deteriorated Credit Quality [Member]169true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:170false 5us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQualityus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse54110005411USD$falsefalsefalse2truefalsefalse66320006632USD$falsefalsefalse3truefalsefalse62640006264USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe balance of financing receivables that were acquired with deteriorated credit quality.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Loans Acquired With Deteriorated Credit Quality171false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse154false USDtruefalse$c371_AsOf30Jun2013_ConstructionAndLandDevelopmentMember_LoansHeldforInvestmentMember_UnpaidPrincipalBalanceMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseUnpaid Principal Balance [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_UnpaidPrincipalBalanceMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseConstruction and Land Development [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ConstructionAndLandDevelopmentMembermisn_LoansAxisexplicitMemberfalsefalseLoans Held for Investment (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_LoansHeldforInvestmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Unpaid Principal Balance [Member] | Construction and Land Development [Member] | Loans Held for Investment (Member)172true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:173false 5us-gaap_NotesReceivableNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse1495600014956USD$falsefalsefalse2truefalsefalse1936700019367USD$falsefalsefalse3truefalsefalse1583000015830USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3 -Article 5 false2Total Loans Held for Investment174false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse157false USDtruefalse$c340_AsOf30Jun2013_OwnerOccupiedMember_ImpairedLoansWithAnAllowanceRecordedMember_UnpaidPrincipalBalanceMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseUnpaid Principal Balance [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_UnpaidPrincipalBalanceMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseOwner Occupied [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_OwnerOccupiedMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With An Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithAnAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Unpaid Principal Balance [Member] | Owner Occupied [Member] | Impaired Loans With An Allowance Recorded (Member)175true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:176false 5us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalanceus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse135000135USD$falsefalsefalse2truefalsefalse594000594USD$falsefalsefalse3truefalsefalse731000731USD$falsefalsefalsexbrli:monetaryItemTypemonetaryUnpaid principal balance of impaired financing receivables for which there is a related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 false2Impaired Loans With An Allowance Recorded177false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse160false USDtruefalse$c346_AsOf30Jun2013_OwnerOccupiedMember_ImpairedLoansWithNoAllowanceRecordedMember_UnpaidPrincipalBalanceMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseUnpaid Principal Balance [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_UnpaidPrincipalBalanceMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseOwner Occupied [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_OwnerOccupiedMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With No Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithNoAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Unpaid Principal Balance [Member] | Owner Occupied [Member] | Impaired Loans With No Allowance Recorded (Member)178true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:179false 5us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalanceus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse23010002301USD$falsefalsefalse2truefalsefalse13700001370USD$falsefalsefalse3truefalsefalse17450001745USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of unpaid principal balance of impaired financing receivables for which there is no related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 false2Impaired Loans With No Allowance Recorded180false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse163false USDtruefalse$c350_AsOf30Jun2013_OwnerOccupiedMember_IndividuallyEvaluatedForImpairmentMember_UnpaidPrincipalBalanceMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseUnpaid Principal Balance [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_UnpaidPrincipalBalanceMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseOwner Occupied [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_OwnerOccupiedMembermisn_LoansAxisexplicitMemberfalsefalseIndividually Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_IndividuallyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Unpaid Principal Balance [Member] | Owner Occupied [Member] | Individually Evaluated for Impairment [Member]181true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:182false 5us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalanceus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse24360002436USD$falsefalsefalse2truefalsefalse19640001964USD$falsefalsefalse3truefalsefalse24760002476USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 false2Total Loans Individually Evaluated For Impairment183false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse166false USDtruefalse$c357_AsOf30Jun2013_OwnerOccupiedMember_CollectivelyEvaluatedForImpairmentMember_UnpaidPrincipalBalanceMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseUnpaid Principal Balance [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_UnpaidPrincipalBalanceMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseOwner Occupied [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_OwnerOccupiedMembermisn_LoansAxisexplicitMemberfalsefalseCollectively Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_CollectivelyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Unpaid Principal Balance [Member] | Owner Occupied [Member] | Collectively Evaluated for Impairment [Member]184true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:185false 5us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairmentus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse5124200051242USD$falsefalsefalse2truefalsefalse4910000049100USD$falsefalsefalse3truefalsefalse5183700051837USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe balance of financing receivables that were collectively evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Loans Collectively Evaluated For Impairment186false 5us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairmentus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse5124200051242USD$falsefalsefalse2truefalsefalse4910000049100USD$falsefalsefalse3truefalsefalse5183700051837USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe balance of financing receivables that were collectively evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Loans Collectively Evaluated For Impairment187false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse169false USDtruefalse$c365_AsOf30Jun2013_OwnerOccupiedMember_AcquiredWithDeterioratedCreditQualityMember_UnpaidPrincipalBalanceMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseUnpaid Principal Balance [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_UnpaidPrincipalBalanceMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseOwner Occupied [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_OwnerOccupiedMembermisn_LoansAxisexplicitMemberfalsefalseAcquired with Deteriorated Credit Quality [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AcquiredWithDeterioratedCreditQualityMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Unpaid Principal Balance [Member] | Owner Occupied [Member] | Acquired with Deteriorated Credit Quality [Member]188true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:189false 5us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQualityus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse1715700017157USD$falsefalsefalse2truefalsefalse1795400017954USD$falsefalsefalse3truefalsefalse1857500018575USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe balance of financing receivables that were acquired with deteriorated credit quality.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Loans Acquired With Deteriorated Credit Quality190false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse172false USDtruefalse$c372_AsOf30Jun2013_OwnerOccupiedMember_LoansHeldforInvestmentMember_UnpaidPrincipalBalanceMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseUnpaid Principal Balance [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_UnpaidPrincipalBalanceMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseOwner Occupied [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_OwnerOccupiedMembermisn_LoansAxisexplicitMemberfalsefalseLoans Held for Investment (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_LoansHeldforInvestmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Unpaid Principal Balance [Member] | Owner Occupied [Member] | Loans Held for Investment (Member)191true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:192false 5us-gaap_NotesReceivableNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse7083500070835USD$falsefalsefalse2truefalsefalse6901800069018USD$falsefalsefalse3truefalsefalse7288800072888USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3 -Article 5 false2Total Loans Held for Investment193false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse175false USDtruefalse$c341_AsOf30Jun2013_NonOwnerOccupiedMember_ImpairedLoansWithAnAllowanceRecordedMember_UnpaidPrincipalBalanceMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseUnpaid Principal Balance [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_UnpaidPrincipalBalanceMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseNon Owner Occupied [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_NonOwnerOccupiedMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With An Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithAnAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Unpaid Principal Balance [Member] | Non Owner Occupied [Member] | Impaired Loans With An Allowance Recorded (Member)194true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:195false 5us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalanceus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse758000758USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse763000763USD$falsefalsefalsexbrli:monetaryItemTypemonetaryUnpaid principal balance of impaired financing receivables for which there is a related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 false2Impaired Loans With An Allowance Recorded196false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse178false USDtruefalse$c492_AsOf31Dec2012_NonOwnerOccupiedMember_ImpairedLoansWithNoAllowanceRecordedMember_UnpaidPrincipalBalanceMemberhttp://www.sec.gov/CIK0001129920instant2012-12-31T00:00:000001-01-01T00:00:00falsefalseUnpaid Principal Balance [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_UnpaidPrincipalBalanceMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseNon Owner Occupied [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_NonOwnerOccupiedMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With No Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithNoAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Unpaid Principal Balance [Member] | Non Owner Occupied [Member] | Impaired Loans With No Allowance Recorded (Member)197true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:198false 5us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalanceus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of unpaid principal balance of impaired financing receivables for which there is no related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 false2Impaired Loans With No Allowance Recorded199false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse180false USDtruefalse$c351_AsOf30Jun2013_NonOwnerOccupiedMember_IndividuallyEvaluatedForImpairmentMember_UnpaidPrincipalBalanceMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseUnpaid Principal Balance [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_UnpaidPrincipalBalanceMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseNon Owner Occupied [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_NonOwnerOccupiedMembermisn_LoansAxisexplicitMemberfalsefalseIndividually Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_IndividuallyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Unpaid Principal Balance [Member] | Non Owner Occupied [Member] | Individually Evaluated for Impairment [Member]200true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:201false 5us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalanceus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse758000758USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse763000763USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 false2Total Loans Individually Evaluated For Impairment202false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse183false USDtruefalse$c358_AsOf30Jun2013_NonOwnerOccupiedMember_CollectivelyEvaluatedForImpairmentMember_UnpaidPrincipalBalanceMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseUnpaid Principal Balance [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_UnpaidPrincipalBalanceMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseNon Owner Occupied [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_NonOwnerOccupiedMembermisn_LoansAxisexplicitMemberfalsefalseCollectively Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_CollectivelyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Unpaid Principal Balance [Member] | Non Owner Occupied [Member] | Collectively Evaluated for Impairment [Member]203true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:204false 5us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairmentus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse6268500062685USD$falsefalsefalse2truefalsefalse5294000052940USD$falsefalsefalse3truefalsefalse5705800057058USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe balance of financing receivables that were collectively evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Loans Collectively Evaluated For Impairment205false 5us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairmentus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse6268500062685USD$falsefalsefalse2truefalsefalse5294000052940USD$falsefalsefalse3truefalsefalse5705800057058USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe balance of financing receivables that were collectively evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Loans Collectively Evaluated For Impairment206false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse186false USDtruefalse$c366_AsOf30Jun2013_NonOwnerOccupiedMember_AcquiredWithDeterioratedCreditQualityMember_UnpaidPrincipalBalanceMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseUnpaid Principal Balance [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_UnpaidPrincipalBalanceMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseNon Owner Occupied [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_NonOwnerOccupiedMembermisn_LoansAxisexplicitMemberfalsefalseAcquired with Deteriorated Credit Quality [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AcquiredWithDeterioratedCreditQualityMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Unpaid Principal Balance [Member] | Non Owner Occupied [Member] | Acquired with Deteriorated Credit Quality [Member]207true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:208false 5us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQualityus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse1304800013048USD$falsefalsefalse2truefalsefalse1331700013317USD$falsefalsefalse3truefalsefalse1318400013184USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe balance of financing receivables that were acquired with deteriorated credit quality.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Loans Acquired With Deteriorated Credit Quality209false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse189false USDtruefalse$c373_AsOf30Jun2013_NonOwnerOccupiedMember_LoansHeldforInvestmentMember_UnpaidPrincipalBalanceMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseUnpaid Principal Balance [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_UnpaidPrincipalBalanceMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseNon Owner Occupied [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_NonOwnerOccupiedMembermisn_LoansAxisexplicitMemberfalsefalseLoans Held for Investment (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_LoansHeldforInvestmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Unpaid Principal Balance [Member] | Non Owner Occupied [Member] | Loans Held for Investment (Member)210true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:211false 5us-gaap_NotesReceivableNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse7649100076491USD$falsefalsefalse2truefalsefalse6625700066257USD$falsefalsefalse3truefalsefalse7100500071005USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3 -Article 5 false2Total Loans Held for Investment212false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse192false USDtruefalse$c342_AsOf30Jun2013_ResidentialRealEstateMember_ImpairedLoansWithAnAllowanceRecordedMember_UnpaidPrincipalBalanceMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseUnpaid Principal Balance [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_UnpaidPrincipalBalanceMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseResidential Real Estate [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_ResidentialRealEstateMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With An Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithAnAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Unpaid Principal Balance [Member] | Residential Real Estate [Member] | Impaired Loans With An Allowance Recorded (Member)213true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:214false 5us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalanceus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse10010001001USD$falsefalsefalse2truefalsefalse190000190USD$falsefalsefalse3truefalsefalse899000899USD$falsefalsefalsexbrli:monetaryItemTypemonetaryUnpaid principal balance of impaired financing receivables for which there is a related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 false2Impaired Loans With An Allowance Recorded215false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse195false USDtruefalse$c493_AsOf31Dec2012_ResidentialRealEstateMember_ImpairedLoansWithNoAllowanceRecordedMember_UnpaidPrincipalBalanceMemberhttp://www.sec.gov/CIK0001129920instant2012-12-31T00:00:000001-01-01T00:00:00falsefalseUnpaid Principal Balance [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_UnpaidPrincipalBalanceMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseResidential Real Estate [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_ResidentialRealEstateMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With No Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithNoAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Unpaid Principal Balance [Member] | Residential Real Estate [Member] | Impaired Loans With No Allowance Recorded (Member)216true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:217false 5us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalanceus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of unpaid principal balance of impaired financing receivables for which there is no related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 false2Impaired Loans With No Allowance Recorded218false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse197false USDtruefalse$c352_AsOf30Jun2013_ResidentialRealEstateMember_IndividuallyEvaluatedForImpairmentMember_UnpaidPrincipalBalanceMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseUnpaid Principal Balance [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_UnpaidPrincipalBalanceMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseResidential Real Estate [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_ResidentialRealEstateMembermisn_LoansAxisexplicitMemberfalsefalseIndividually Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_IndividuallyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Unpaid Principal Balance [Member] | Residential Real Estate [Member] | Individually Evaluated for Impairment [Member]219true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:220false 5us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalanceus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse10010001001USD$falsefalsefalse2truefalsefalse190000190USD$falsefalsefalse3truefalsefalse899000899USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 false2Total Loans Individually Evaluated For Impairment221false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse200false USDtruefalse$c359_AsOf30Jun2013_ResidentialRealEstateMember_CollectivelyEvaluatedForImpairmentMember_UnpaidPrincipalBalanceMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseUnpaid Principal Balance [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_UnpaidPrincipalBalanceMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseResidential Real Estate [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_ResidentialRealEstateMembermisn_LoansAxisexplicitMemberfalsefalseCollectively Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_CollectivelyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Unpaid Principal Balance [Member] | Residential Real Estate [Member] | Collectively Evaluated for Impairment [Member]222true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:223false 5us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairmentus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse2311400023114USD$falsefalsefalse2truefalsefalse2821300028213USD$falsefalsefalse3truefalsefalse2561300025613USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe balance of financing receivables that were collectively evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Loans Collectively Evaluated For Impairment224false 5us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairmentus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse2311400023114USD$falsefalsefalse2truefalsefalse2821300028213USD$falsefalsefalse3truefalsefalse2561300025613USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe balance of financing receivables that were collectively evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Loans Collectively Evaluated For Impairment225false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse203false USDtruefalse$c367_AsOf30Jun2013_ResidentialRealEstateMember_AcquiredWithDeterioratedCreditQualityMember_UnpaidPrincipalBalanceMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseUnpaid Principal Balance [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_UnpaidPrincipalBalanceMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseResidential Real Estate [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_ResidentialRealEstateMembermisn_LoansAxisexplicitMemberfalsefalseAcquired with Deteriorated Credit Quality [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AcquiredWithDeterioratedCreditQualityMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Unpaid Principal Balance [Member] | Residential Real Estate [Member] | Acquired with Deteriorated Credit Quality [Member]226true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:227false 5us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQualityus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse57790005779USD$falsefalsefalse2truefalsefalse68350006835USD$falsefalsefalse3truefalsefalse64680006468USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe balance of financing receivables that were acquired with deteriorated credit quality.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Loans Acquired With Deteriorated Credit Quality228false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse206false USDtruefalse$c374_AsOf30Jun2013_ResidentialRealEstateMember_LoansHeldforInvestmentMember_UnpaidPrincipalBalanceMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseUnpaid Principal Balance [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_UnpaidPrincipalBalanceMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseResidential Real Estate [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_ResidentialRealEstateMembermisn_LoansAxisexplicitMemberfalsefalseLoans Held for Investment (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_LoansHeldforInvestmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Unpaid Principal Balance [Member] | Residential Real Estate [Member] | Loans Held for Investment (Member)229true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:230false 5us-gaap_NotesReceivableNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse2989400029894USD$falsefalsefalse2truefalsefalse3523800035238USD$falsefalsefalse3truefalsefalse3298000032980USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3 -Article 5 false2Total Loans Held for Investment231false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse209false USDtruefalse$c343_AsOf30Jun2013_AllOtherRealEstateMember_ImpairedLoansWithAnAllowanceRecordedMember_UnpaidPrincipalBalanceMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseUnpaid Principal Balance [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_UnpaidPrincipalBalanceMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseAll Other Real Estate [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AllOtherRealEstateMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With An Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithAnAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Unpaid Principal Balance [Member] | All Other Real Estate [Member] | Impaired Loans With An Allowance Recorded (Member)232true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:233false 5us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalanceus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse2500025USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse3000030USD$falsefalsefalsexbrli:monetaryItemTypemonetaryUnpaid principal balance of impaired financing receivables for which there is a related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 false2Impaired Loans With An Allowance Recorded234false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse212false USDtruefalse$c494_AsOf31Dec2012_AllOtherRealEstateMember_ImpairedLoansWithNoAllowanceRecordedMember_UnpaidPrincipalBalanceMemberhttp://www.sec.gov/CIK0001129920instant2012-12-31T00:00:000001-01-01T00:00:00falsefalseUnpaid Principal Balance [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_UnpaidPrincipalBalanceMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseAll Other Real Estate [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AllOtherRealEstateMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With No Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithNoAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Unpaid Principal Balance [Member] | All Other Real Estate [Member] | Impaired Loans With No Allowance Recorded (Member)235true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:236false 5us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalanceus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of unpaid principal balance of impaired financing receivables for which there is no related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 false2Impaired Loans With No Allowance Recorded237false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse214false USDtruefalse$c353_AsOf30Jun2013_AllOtherRealEstateMember_IndividuallyEvaluatedForImpairmentMember_UnpaidPrincipalBalanceMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseUnpaid Principal Balance [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_UnpaidPrincipalBalanceMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseAll Other Real Estate [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AllOtherRealEstateMembermisn_LoansAxisexplicitMemberfalsefalseIndividually Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_IndividuallyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Unpaid Principal Balance [Member] | All Other Real Estate [Member] | Individually Evaluated for Impairment [Member]238true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:239false 5us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalanceus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse2500025USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse3000030USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 false2Total Loans Individually Evaluated For Impairment240false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse217false USDtruefalse$c360_AsOf30Jun2013_AllOtherRealEstateMember_CollectivelyEvaluatedForImpairmentMember_UnpaidPrincipalBalanceMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseUnpaid Principal Balance [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_UnpaidPrincipalBalanceMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseAll Other Real Estate [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AllOtherRealEstateMembermisn_LoansAxisexplicitMemberfalsefalseCollectively Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_CollectivelyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Unpaid Principal Balance [Member] | All Other Real Estate [Member] | Collectively Evaluated for Impairment [Member]241true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:242false 5us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairmentus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse1751900017519USD$falsefalsefalse2truefalsefalse18800001880USD$falsefalsefalse3truefalsefalse83190008319USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe balance of financing receivables that were collectively evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Loans Collectively Evaluated For Impairment243false 5us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairmentus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse1751900017519USD$falsefalsefalse2truefalsefalse18800001880USD$falsefalsefalse3truefalsefalse83190008319USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe balance of financing receivables that were collectively evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Loans Collectively Evaluated For Impairment244false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse220false USDtruefalse$c375_AsOf30Jun2013_AllOtherRealEstateMember_LoansHeldforInvestmentMember_UnpaidPrincipalBalanceMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseUnpaid Principal Balance [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_UnpaidPrincipalBalanceMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseAll Other Real Estate [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AllOtherRealEstateMembermisn_LoansAxisexplicitMemberfalsefalseLoans Held for Investment (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_LoansHeldforInvestmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Unpaid Principal Balance [Member] | All Other Real Estate [Member] | Loans Held for Investment (Member)245true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:246false 5us-gaap_NotesReceivableNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse1754400017544USD$falsefalsefalse2truefalsefalse18800001880USD$falsefalsefalse3truefalsefalse83490008349USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3 -Article 5 false2Total Loans Held for Investment247false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse223false USDtruefalse$c344_AsOf30Jun2013_CommericalAndIndustrialMember_ImpairedLoansWithAnAllowanceRecordedMember_UnpaidPrincipalBalanceMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseUnpaid Principal Balance [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_UnpaidPrincipalBalanceMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseCommerical and Industrial [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_CommericalAndIndustrialMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With An Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithAnAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Unpaid Principal Balance [Member] | Commerical and Industrial [Member] | Impaired Loans With An Allowance Recorded (Member)248true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:249false 5us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalanceus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse10480001048USD$falsefalsefalse2truefalsefalse353000353USD$falsefalsefalse3truefalsefalse20400002040USD$falsefalsefalsexbrli:monetaryItemTypemonetaryUnpaid principal balance of impaired financing receivables for which there is a related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 false2Impaired Loans With An Allowance Recorded250false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse226false USDtruefalse$c347_AsOf30Jun2013_CommericalAndIndustrialMember_ImpairedLoansWithNoAllowanceRecordedMember_UnpaidPrincipalBalanceMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseUnpaid Principal Balance [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_UnpaidPrincipalBalanceMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseCommerical and Industrial [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_CommericalAndIndustrialMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With No Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithNoAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Unpaid Principal Balance [Member] | Commerical and Industrial [Member] | Impaired Loans With No Allowance Recorded (Member)251true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:252false 5us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalanceus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse16830001683USD$falsefalsefalse2truefalsefalse11430001143USD$falsefalsefalse3truefalsefalse14270001427USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of unpaid principal balance of impaired financing receivables for which there is no related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 false2Impaired Loans With No Allowance Recorded253false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse229false USDtruefalse$c354_AsOf30Jun2013_CommericalAndIndustrialMember_IndividuallyEvaluatedForImpairmentMember_UnpaidPrincipalBalanceMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseUnpaid Principal Balance [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_UnpaidPrincipalBalanceMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseCommerical and Industrial [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_CommericalAndIndustrialMembermisn_LoansAxisexplicitMemberfalsefalseIndividually Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_IndividuallyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Unpaid Principal Balance [Member] | Commerical and Industrial [Member] | Individually Evaluated for Impairment [Member]254true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:255false 5us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalanceus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse27310002731USD$falsefalsefalse2truefalsefalse14960001496USD$falsefalsefalse3truefalsefalse34670003467USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 false2Total Loans Individually Evaluated For Impairment256false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse232false USDtruefalse$c361_AsOf30Jun2013_CommericalAndIndustrialMember_CollectivelyEvaluatedForImpairmentMember_UnpaidPrincipalBalanceMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseUnpaid Principal Balance [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_UnpaidPrincipalBalanceMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseCommerical and Industrial [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_CommericalAndIndustrialMembermisn_LoansAxisexplicitMemberfalsefalseCollectively Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_CollectivelyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Unpaid Principal Balance [Member] | Commerical and Industrial [Member] | Collectively Evaluated for Impairment [Member]257true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:258false 5us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairmentus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse3742100037421USD$falsefalsefalse2truefalsefalse3055100030551USD$falsefalsefalse3truefalsefalse4573500045735USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe balance of financing receivables that were collectively evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Loans Collectively Evaluated For Impairment259false 5us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairmentus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse3742100037421USD$falsefalsefalse2truefalsefalse3055100030551USD$falsefalsefalse3truefalsefalse4573500045735USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe balance of financing receivables that were collectively evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Loans Collectively Evaluated For Impairment260false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse235false USDtruefalse$c368_AsOf30Jun2013_CommericalAndIndustrialMember_AcquiredWithDeterioratedCreditQualityMember_UnpaidPrincipalBalanceMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseUnpaid Principal Balance [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_UnpaidPrincipalBalanceMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseCommerical and Industrial [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_CommericalAndIndustrialMembermisn_LoansAxisexplicitMemberfalsefalseAcquired with Deteriorated Credit Quality [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AcquiredWithDeterioratedCreditQualityMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Unpaid Principal Balance [Member] | Commerical and Industrial [Member] | Acquired with Deteriorated Credit Quality [Member]261true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:262false 5us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQualityus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse20630002063USD$falsefalsefalse2truefalsefalse43300004330USD$falsefalsefalse3truefalsefalse24890002489USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe balance of financing receivables that were acquired with deteriorated credit quality.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Loans Acquired With Deteriorated Credit Quality263false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse238false USDtruefalse$c376_AsOf30Jun2013_CommericalAndIndustrialMember_LoansHeldforInvestmentMember_UnpaidPrincipalBalanceMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseUnpaid Principal Balance [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_UnpaidPrincipalBalanceMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseCommerical and Industrial [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_CommericalAndIndustrialMembermisn_LoansAxisexplicitMemberfalsefalseLoans Held for Investment (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_LoansHeldforInvestmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Unpaid Principal Balance [Member] | Commerical and Industrial [Member] | Loans Held for Investment (Member)264true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:265false 5us-gaap_NotesReceivableNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse4221500042215USD$falsefalsefalse2truefalsefalse3637700036377USD$falsefalsefalse3truefalsefalse5169100051691USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3 -Article 5 false2Total Loans Held for Investment266false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse241false USDtruefalse$c488_AsOf31Dec2012_ConsumerAndAllOtherLoansAndLeasesMember_ImpairedLoansWithAnAllowanceRecordedMember_UnpaidPrincipalBalanceMemberhttp://www.sec.gov/CIK0001129920instant2012-12-31T00:00:000001-01-01T00:00:00falsefalseUnpaid Principal Balance [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_UnpaidPrincipalBalanceMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseConsumer and All Other Loans and Leases [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ConsumerAndAllOtherLoansAndLeasesMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With An Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithAnAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Unpaid Principal Balance [Member] | Consumer and All Other Loans and Leases [Member] | Impaired Loans With An Allowance Recorded (Member)267true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:268false 5us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalanceus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryUnpaid principal balance of impaired financing receivables for which there is a related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 false2Impaired Loans With An Allowance Recorded269false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse243false USDtruefalse$c496_AsOf31Dec2012_ConsumerAndAllOtherLoansAndLeasesMember_ImpairedLoansWithNoAllowanceRecordedMember_UnpaidPrincipalBalanceMemberhttp://www.sec.gov/CIK0001129920instant2012-12-31T00:00:000001-01-01T00:00:00falsefalseUnpaid Principal Balance [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_UnpaidPrincipalBalanceMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseConsumer and All Other Loans and Leases [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ConsumerAndAllOtherLoansAndLeasesMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With No Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithNoAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Unpaid Principal Balance [Member] | Consumer and All Other Loans and Leases [Member] | Impaired Loans With No Allowance Recorded (Member)270true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:271false 5us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalanceus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of unpaid principal balance of impaired financing receivables for which there is no related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 false2Impaired Loans With No Allowance Recorded272false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse245false USDtruefalse$c504_AsOf31Dec2012_ConsumerAndAllOtherLoansAndLeasesMember_IndividuallyEvaluatedForImpairmentMember_UnpaidPrincipalBalanceMemberhttp://www.sec.gov/CIK0001129920instant2012-12-31T00:00:000001-01-01T00:00:00falsefalseUnpaid Principal Balance [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_UnpaidPrincipalBalanceMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseConsumer and All Other Loans and Leases [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ConsumerAndAllOtherLoansAndLeasesMembermisn_LoansAxisexplicitMemberfalsefalseIndividually Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_IndividuallyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Unpaid Principal Balance [Member] | Consumer and All Other Loans and Leases [Member] | Individually Evaluated for Impairment [Member]273true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:274false 5us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalanceus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 false2Total Loans Individually Evaluated For Impairment275false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse247false USDtruefalse$c362_AsOf30Jun2013_ConsumerAndAllOtherLoansAndLeasesMember_CollectivelyEvaluatedForImpairmentMember_UnpaidPrincipalBalanceMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseUnpaid Principal Balance [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_UnpaidPrincipalBalanceMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseConsumer and All Other Loans and Leases [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ConsumerAndAllOtherLoansAndLeasesMembermisn_LoansAxisexplicitMemberfalsefalseCollectively Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_CollectivelyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Unpaid Principal Balance [Member] | Consumer and All Other Loans and Leases [Member] | Collectively Evaluated for Impairment [Member]276true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:277false 5us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairmentus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse55390005539USD$falsefalsefalse2truefalsefalse29040002904USD$falsefalsefalse3truefalsefalse24350002435USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe balance of financing receivables that were collectively evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Loans Collectively Evaluated For Impairment278false 5us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairmentus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse55390005539USD$falsefalsefalse2truefalsefalse29040002904USD$falsefalsefalse3truefalsefalse24350002435USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe balance of financing receivables that were collectively evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Loans Collectively Evaluated For Impairment279false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse250false USDtruefalse$c369_AsOf30Jun2013_ConsumerAndAllOtherLoansAndLeasesMember_AcquiredWithDeterioratedCreditQualityMember_UnpaidPrincipalBalanceMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseUnpaid Principal Balance [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_UnpaidPrincipalBalanceMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseConsumer and All Other Loans and Leases [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ConsumerAndAllOtherLoansAndLeasesMembermisn_LoansAxisexplicitMemberfalsefalseAcquired with Deteriorated Credit Quality [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AcquiredWithDeterioratedCreditQualityMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Unpaid Principal Balance [Member] | Consumer and All Other Loans and Leases [Member] | Acquired with Deteriorated Credit Quality [Member]280true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:281false 5us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQualityus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse180000180USD$falsefalsefalse2truefalsefalse188000188USD$falsefalsefalse3truefalsefalse183000183USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe balance of financing receivables that were acquired with deteriorated credit quality.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Loans Acquired With Deteriorated Credit Quality282false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse253false USDtruefalse$c377_AsOf30Jun2013_ConsumerAndAllOtherLoansAndLeasesMember_LoansHeldforInvestmentMember_UnpaidPrincipalBalanceMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseUnpaid Principal Balance [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_UnpaidPrincipalBalanceMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseConsumer and All Other Loans and Leases [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ConsumerAndAllOtherLoansAndLeasesMembermisn_LoansAxisexplicitMemberfalsefalseLoans Held for Investment (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_LoansHeldforInvestmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Unpaid Principal Balance [Member] | Consumer and All Other Loans and Leases [Member] | Loans Held for Investment (Member)283true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:284false 5us-gaap_NotesReceivableNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse57190005719USD$falsefalsefalse2truefalsefalse30920003092USD$falsefalsefalse3truefalsefalse26180002618USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3 -Article 5 false2Total Loans Held for Investment285false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse256false USDtruefalse$c345_AsOf30Jun2013_ImpairedLoansWithAnAllowanceRecordedMember_UnpaidPrincipalBalanceMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseUnpaid Principal Balance [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_UnpaidPrincipalBalanceMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseImpaired Loans With An Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithAnAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Unpaid Principal Balance [Member] | Impaired Loans With An Allowance Recorded (Member)286true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:287false 5us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalanceus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse32760003276USD$falsefalsefalse2truefalsefalse13370001337USD$falsefalsefalse3truefalsefalse48670004867USD$falsefalsefalsexbrli:monetaryItemTypemonetaryUnpaid principal balance of impaired financing receivables for which there is a related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 false2Impaired Loans With An Allowance Recorded288false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse259false USDtruefalse$c348_AsOf30Jun2013_ImpairedLoansWithNoAllowanceRecordedMember_UnpaidPrincipalBalanceMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseUnpaid Principal Balance [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_UnpaidPrincipalBalanceMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseImpaired Loans With No Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithNoAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Unpaid Principal Balance [Member] | Impaired Loans With No Allowance Recorded (Member)289true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:290false 5us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalanceus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse39840003984USD$falsefalsefalse2truefalsefalse30600003060USD$falsefalsefalse3truefalsefalse33490003349USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of unpaid principal balance of impaired financing receivables for which there is no related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 false2Impaired Loans With No Allowance Recorded291false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse262false USDtruefalse$c355_AsOf30Jun2013_IndividuallyEvaluatedForImpairmentMember_UnpaidPrincipalBalanceMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseUnpaid Principal Balance [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_UnpaidPrincipalBalanceMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseIndividually Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_IndividuallyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Unpaid Principal Balance [Member] | Individually Evaluated for Impairment [Member]292true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:293false 5us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalanceus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse72600007260USD$falsefalsefalse2truefalsefalse43970004397USD$falsefalsefalse3truefalsefalse82160008216USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 false2Total Loans Individually Evaluated For Impairment294false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse265false USDtruefalse$c363_AsOf30Jun2013_CollectivelyEvaluatedForImpairmentMember_UnpaidPrincipalBalanceMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseUnpaid Principal Balance [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_UnpaidPrincipalBalanceMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseCollectively Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_CollectivelyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Unpaid Principal Balance [Member] | Collectively Evaluated for Impairment [Member]295true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:296false 5us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairmentus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse206756000206756USD$falsefalsefalse2truefalsefalse177576000177576USD$falsefalsefalse3truefalsefalse199982000199982USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe balance of financing receivables that were collectively evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Loans Collectively Evaluated For Impairment297false 5us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairmentus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse206756000206756USD$falsefalsefalse2truefalsefalse177576000177576USD$falsefalsefalse3truefalsefalse199982000199982USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe balance of financing receivables that were collectively evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Loans Collectively Evaluated For Impairment298false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse268false USDtruefalse$c370_AsOf30Jun2013_AcquiredWithDeterioratedCreditQualityMember_UnpaidPrincipalBalanceMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseUnpaid Principal Balance [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_UnpaidPrincipalBalanceMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseAcquired with Deteriorated Credit Quality [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AcquiredWithDeterioratedCreditQualityMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Unpaid Principal Balance [Member] | Acquired with Deteriorated Credit Quality [Member]299true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:300false 5us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQualityus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse4363800043638USD$falsefalsefalse2truefalsefalse4925600049256USD$falsefalsefalse3truefalsefalse4716300047163USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe balance of financing receivables that were acquired with deteriorated credit quality.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Loans Acquired With Deteriorated Credit Quality301false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse271false USDtruefalse$c378_AsOf30Jun2013_LoansHeldforInvestmentMember_UnpaidPrincipalBalanceMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseUnpaid Principal Balance [Member]us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_UnpaidPrincipalBalanceMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseLoans Held for Investment (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_LoansHeldforInvestmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Unpaid Principal Balance [Member] | Loans Held for Investment (Member)302true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:303false 5us-gaap_NotesReceivableNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse257654000257654USD$falsefalsefalse2truefalsefalse231229000231229USD$falsefalsefalse3truefalsefalse255361000255361USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3 -Article 5 false2Total Loans Held for Investment304false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse274false USDtruefalse$c379_AsOf30Jun2013_ConstructionAndLandDevelopmentMember_ImpairedLoansWithAnAllowanceRecordedMember_RelatedAllowanceforLoanandLeaseLossesMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRelated Allowance for Loan and Lease Losses (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RelatedAllowanceforLoanandLeaseLossesMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseConstruction and Land Development [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ConstructionAndLandDevelopmentMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With An Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithAnAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Related Allowance for Loan and Lease Losses (Member) | Construction and Land Development [Member] | Impaired Loans With An Allowance Recorded (Member)305true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:306false 5us-gaap_ImpairedFinancingReceivableRelatedAllowanceus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse121000121USD$falsefalsefalse2truefalsefalse20002USD$falsefalsefalse3truefalsefalse103000103USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of allowance for credit losses related to recorded investment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 false2Impaired Loans With An Allowance Recorded307false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse277false USDtruefalse$c386_AsOf30Jun2013_ConstructionAndLandDevelopmentMember_IndividuallyEvaluatedForImpairmentMember_RelatedAllowanceforLoanandLeaseLossesMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRelated Allowance for Loan and Lease Losses (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RelatedAllowanceforLoanandLeaseLossesMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseConstruction and Land Development [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ConstructionAndLandDevelopmentMembermisn_LoansAxisexplicitMemberfalsefalseIndividually Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_IndividuallyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Related Allowance for Loan and Lease Losses (Member) | Construction and Land Development [Member] | Individually Evaluated for Impairment [Member]308true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:309false 5us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1us-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse121000121USD$falsefalsefalse2truefalsefalse20002USD$falsefalsefalse3truefalsefalse103000103USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Total Loans Individually Evaluated For Impairment310false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse280false USDtruefalse$c393_AsOf30Jun2013_ConstructionAndLandDevelopmentMember_CollectivelyEvaluatedForImpairmentMember_RelatedAllowanceforLoanandLeaseLossesMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRelated Allowance for Loan and Lease Losses (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RelatedAllowanceforLoanandLeaseLossesMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseConstruction and Land Development [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ConstructionAndLandDevelopmentMembermisn_LoansAxisexplicitMemberfalsefalseCollectively Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_CollectivelyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Related Allowance for Loan and Lease Losses (Member) | Construction and Land Development [Member] | Collectively Evaluated for Impairment [Member]311true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:312false 5us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairmentus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse306000306USD$falsefalsefalse2truefalsefalse364000364USD$falsefalsefalse3truefalsefalse218000218USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Loans Collectively Evaluated For Impairment313false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse283false USDtruefalse$c731_AsOf30Jun2012_ConstructionAndLandDevelopmentMember_AcquiredWithDeterioratedCreditQualityMember_RelatedAllowanceforLoanandLeaseLossesMemberhttp://www.sec.gov/CIK0001129920instant2012-06-30T00:00:000001-01-01T00:00:00falsefalseRelated Allowance for Loan and Lease Losses (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RelatedAllowanceforLoanandLeaseLossesMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseConstruction and Land Development [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ConstructionAndLandDevelopmentMembermisn_LoansAxisexplicitMemberfalsefalseAcquired with Deteriorated Credit Quality [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AcquiredWithDeterioratedCreditQualityMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Related Allowance for Loan and Lease Losses (Member) | Construction and Land Development [Member] | Acquired with Deteriorated Credit Quality [Member]314true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:315false 5us-gaap_FinancingReceivableAllowanceForCreditLossesAcquiredWithDeterioratedCreditQualityus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2truefalsefalse00USD$falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryThe valuation allowance for financing receivables acquired with deteriorated credit quality.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Loans Acquired With Deteriorated Credit Quality316false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse284false USDtruefalse$c404_AsOf30Jun2013_ConstructionAndLandDevelopmentMember_LoansHeldforInvestmentMember_RelatedAllowanceforLoanandLeaseLossesMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRelated Allowance for Loan and Lease Losses (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RelatedAllowanceforLoanandLeaseLossesMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseConstruction and Land Development [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ConstructionAndLandDevelopmentMembermisn_LoansAxisexplicitMemberfalsefalseLoans Held for Investment (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_LoansHeldforInvestmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Related Allowance for Loan and Lease Losses (Member) | Construction and Land Development [Member] | Loans Held for Investment (Member)317true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:318false 5us-gaap_NotesReceivableNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse427000427USD$falsefalsefalse2truefalsefalse366000366USD$falsefalsefalse3truefalsefalse321000321USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3 -Article 5 false2Total Loans Held for Investment319false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse287false USDtruefalse$c380_AsOf30Jun2013_OwnerOccupiedMember_ImpairedLoansWithAnAllowanceRecordedMember_RelatedAllowanceforLoanandLeaseLossesMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRelated Allowance for Loan and Lease Losses (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RelatedAllowanceforLoanandLeaseLossesMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseOwner Occupied [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_OwnerOccupiedMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With An Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithAnAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Related Allowance for Loan and Lease Losses (Member) | Owner Occupied [Member] | Impaired Loans With An Allowance Recorded (Member)320true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:321false 5us-gaap_ImpairedFinancingReceivableRelatedAllowanceus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse3200032USD$falsefalsefalse2truefalsefalse1300013USD$falsefalsefalse3truefalsefalse5300053USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of allowance for credit losses related to recorded investment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 false2Impaired Loans With An Allowance Recorded322false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse290false USDtruefalse$c387_AsOf30Jun2013_OwnerOccupiedMember_IndividuallyEvaluatedForImpairmentMember_RelatedAllowanceforLoanandLeaseLossesMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRelated Allowance for Loan and Lease Losses (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RelatedAllowanceforLoanandLeaseLossesMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseOwner Occupied [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_OwnerOccupiedMembermisn_LoansAxisexplicitMemberfalsefalseIndividually Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_IndividuallyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Related Allowance for Loan and Lease Losses (Member) | Owner Occupied [Member] | Individually Evaluated for Impairment [Member]323true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:324false 5us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1us-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse3200032USD$falsefalsefalse2truefalsefalse1300013USD$falsefalsefalse3truefalsefalse5300053USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Total Loans Individually Evaluated For Impairment325false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse293false USDtruefalse$c394_AsOf30Jun2013_OwnerOccupiedMember_CollectivelyEvaluatedForImpairmentMember_RelatedAllowanceforLoanandLeaseLossesMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRelated Allowance for Loan and Lease Losses (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RelatedAllowanceforLoanandLeaseLossesMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseOwner Occupied [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_OwnerOccupiedMembermisn_LoansAxisexplicitMemberfalsefalseCollectively Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_CollectivelyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Related Allowance for Loan and Lease Losses (Member) | Owner Occupied [Member] | Collectively Evaluated for Impairment [Member]326true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:327false 5us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairmentus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse313000313USD$falsefalsefalse2truefalsefalse491000491USD$falsefalsefalse3truefalsefalse410000410USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Loans Collectively Evaluated For Impairment328false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse296false USDtruefalse$c405_AsOf30Jun2013_OwnerOccupiedMember_LoansHeldforInvestmentMember_RelatedAllowanceforLoanandLeaseLossesMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRelated Allowance for Loan and Lease Losses (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RelatedAllowanceforLoanandLeaseLossesMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseOwner Occupied [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_OwnerOccupiedMembermisn_LoansAxisexplicitMemberfalsefalseLoans Held for Investment (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_LoansHeldforInvestmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Related Allowance for Loan and Lease Losses (Member) | Owner Occupied [Member] | Loans Held for Investment (Member)329true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:330false 5us-gaap_NotesReceivableNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse345000345USD$falsefalsefalse2truefalsefalse504000504USD$falsefalsefalse3truefalsefalse463000463USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3 -Article 5 false2Total Loans Held for Investment331false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse299false USDtruefalse$c381_AsOf30Jun2013_NonOwnerOccupiedMember_ImpairedLoansWithAnAllowanceRecordedMember_RelatedAllowanceforLoanandLeaseLossesMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRelated Allowance for Loan and Lease Losses (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RelatedAllowanceforLoanandLeaseLossesMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseNon Owner Occupied [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_NonOwnerOccupiedMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With An Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithAnAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Related Allowance for Loan and Lease Losses (Member) | Non Owner Occupied [Member] | Impaired Loans With An Allowance Recorded (Member)332true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:333false 5us-gaap_ImpairedFinancingReceivableRelatedAllowanceus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse4200042USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse6600066USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of allowance for credit losses related to recorded investment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 false2Impaired Loans With An Allowance Recorded334false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse302false USDtruefalse$c388_AsOf30Jun2013_NonOwnerOccupiedMember_IndividuallyEvaluatedForImpairmentMember_RelatedAllowanceforLoanandLeaseLossesMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRelated Allowance for Loan and Lease Losses (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RelatedAllowanceforLoanandLeaseLossesMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseNon Owner Occupied [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_NonOwnerOccupiedMembermisn_LoansAxisexplicitMemberfalsefalseIndividually Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_IndividuallyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Related Allowance for Loan and Lease Losses (Member) | Non Owner Occupied [Member] | Individually Evaluated for Impairment [Member]335true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:336false 5us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1us-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse4200042USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse6600066USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Total Loans Individually Evaluated For Impairment337false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse305false USDtruefalse$c395_AsOf30Jun2013_NonOwnerOccupiedMember_CollectivelyEvaluatedForImpairmentMember_RelatedAllowanceforLoanandLeaseLossesMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRelated Allowance for Loan and Lease Losses (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RelatedAllowanceforLoanandLeaseLossesMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseNon Owner Occupied [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_NonOwnerOccupiedMembermisn_LoansAxisexplicitMemberfalsefalseCollectively Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_CollectivelyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Related Allowance for Loan and Lease Losses (Member) | Non Owner Occupied [Member] | Collectively Evaluated for Impairment [Member]338true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:339false 5us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairmentus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse594000594USD$falsefalsefalse2truefalsefalse884000884USD$falsefalsefalse3truefalsefalse664000664USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Loans Collectively Evaluated For Impairment340false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse308false USDtruefalse$c732_AsOf30Jun2012_NonOwnerOccupiedMember_AcquiredWithDeterioratedCreditQualityMember_RelatedAllowanceforLoanandLeaseLossesMemberhttp://www.sec.gov/CIK0001129920instant2012-06-30T00:00:000001-01-01T00:00:00falsefalseRelated Allowance for Loan and Lease Losses (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RelatedAllowanceforLoanandLeaseLossesMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseNon Owner Occupied [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_NonOwnerOccupiedMembermisn_LoansAxisexplicitMemberfalsefalseAcquired with Deteriorated Credit Quality [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AcquiredWithDeterioratedCreditQualityMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Related Allowance for Loan and Lease Losses (Member) | Non Owner Occupied [Member] | Acquired with Deteriorated Credit Quality [Member]341true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:342false 5us-gaap_FinancingReceivableAllowanceForCreditLossesAcquiredWithDeterioratedCreditQualityus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2truefalsefalse00USD$falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryThe valuation allowance for financing receivables acquired with deteriorated credit quality.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Loans Acquired With Deteriorated Credit Quality343false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse309false USDtruefalse$c406_AsOf30Jun2013_NonOwnerOccupiedMember_LoansHeldforInvestmentMember_RelatedAllowanceforLoanandLeaseLossesMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRelated Allowance for Loan and Lease Losses (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RelatedAllowanceforLoanandLeaseLossesMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseNon Owner Occupied [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_NonOwnerOccupiedMembermisn_LoansAxisexplicitMemberfalsefalseLoans Held for Investment (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_LoansHeldforInvestmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Related Allowance for Loan and Lease Losses (Member) | Non Owner Occupied [Member] | Loans Held for Investment (Member)344true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:345false 5us-gaap_NotesReceivableNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse636000636USD$falsefalsefalse2truefalsefalse884000884USD$falsefalsefalse3truefalsefalse730000730USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3 -Article 5 false2Total Loans Held for Investment346false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse312false USDtruefalse$c382_AsOf30Jun2013_ResidentialRealEstateMember_ImpairedLoansWithAnAllowanceRecordedMember_RelatedAllowanceforLoanandLeaseLossesMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRelated Allowance for Loan and Lease Losses (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RelatedAllowanceforLoanandLeaseLossesMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseResidential Real Estate [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_ResidentialRealEstateMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With An Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithAnAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Related Allowance for Loan and Lease Losses (Member) | Residential Real Estate [Member] | Impaired Loans With An Allowance Recorded (Member)347true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:348false 5us-gaap_ImpairedFinancingReceivableRelatedAllowanceus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse424000424USD$falsefalsefalse2truefalsefalse124000124USD$falsefalsefalse3truefalsefalse324000324USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of allowance for credit losses related to recorded investment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 false2Impaired Loans With An Allowance Recorded349false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse315false USDtruefalse$c389_AsOf30Jun2013_ResidentialRealEstateMember_IndividuallyEvaluatedForImpairmentMember_RelatedAllowanceforLoanandLeaseLossesMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRelated Allowance for Loan and Lease Losses (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RelatedAllowanceforLoanandLeaseLossesMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseResidential Real Estate [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_ResidentialRealEstateMembermisn_LoansAxisexplicitMemberfalsefalseIndividually Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_IndividuallyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Related Allowance for Loan and Lease Losses (Member) | Residential Real Estate [Member] | Individually Evaluated for Impairment [Member]350true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:351false 5us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1us-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse424000424USD$falsefalsefalse2truefalsefalse124000124USD$falsefalsefalse3truefalsefalse324000324USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Total Loans Individually Evaluated For Impairment352false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse318false USDtruefalse$c396_AsOf30Jun2013_ResidentialRealEstateMember_CollectivelyEvaluatedForImpairmentMember_RelatedAllowanceforLoanandLeaseLossesMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRelated Allowance for Loan and Lease Losses (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RelatedAllowanceforLoanandLeaseLossesMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseResidential Real Estate [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_ResidentialRealEstateMembermisn_LoansAxisexplicitMemberfalsefalseCollectively Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_CollectivelyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Related Allowance for Loan and Lease Losses (Member) | Residential Real Estate [Member] | Collectively Evaluated for Impairment [Member]353true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:354false 5us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairmentus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse577000577USD$falsefalsefalse2truefalsefalse534000534USD$falsefalsefalse3truefalsefalse582000582USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Loans Collectively Evaluated For Impairment355false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse321false USDtruefalse$c733_AsOf30Jun2012_ResidentialRealEstateMember_AcquiredWithDeterioratedCreditQualityMember_RelatedAllowanceforLoanandLeaseLossesMemberhttp://www.sec.gov/CIK0001129920instant2012-06-30T00:00:000001-01-01T00:00:00falsefalseRelated Allowance for Loan and Lease Losses (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RelatedAllowanceforLoanandLeaseLossesMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseResidential Real Estate [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_ResidentialRealEstateMembermisn_LoansAxisexplicitMemberfalsefalseAcquired with Deteriorated Credit Quality [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AcquiredWithDeterioratedCreditQualityMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Related Allowance for Loan and Lease Losses (Member) | Residential Real Estate [Member] | Acquired with Deteriorated Credit Quality [Member]356true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:357false 5us-gaap_FinancingReceivableAllowanceForCreditLossesAcquiredWithDeterioratedCreditQualityus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2truefalsefalse00USD$falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryThe valuation allowance for financing receivables acquired with deteriorated credit quality.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Loans Acquired With Deteriorated Credit Quality358false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse322false USDtruefalse$c407_AsOf30Jun2013_ResidentialRealEstateMember_LoansHeldforInvestmentMember_RelatedAllowanceforLoanandLeaseLossesMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRelated Allowance for Loan and Lease Losses (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RelatedAllowanceforLoanandLeaseLossesMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseResidential Real Estate [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_ResidentialRealEstateMembermisn_LoansAxisexplicitMemberfalsefalseLoans Held for Investment (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_LoansHeldforInvestmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Related Allowance for Loan and Lease Losses (Member) | Residential Real Estate [Member] | Loans Held for Investment (Member)359true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:360false 5us-gaap_NotesReceivableNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse10010001001USD$falsefalsefalse2truefalsefalse658000658USD$falsefalsefalse3truefalsefalse906000906USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3 -Article 5 false2Total Loans Held for Investment361false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse325false USDtruefalse$c383_AsOf30Jun2013_AllOtherRealEstateMember_ImpairedLoansWithAnAllowanceRecordedMember_RelatedAllowanceforLoanandLeaseLossesMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRelated Allowance for Loan and Lease Losses (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RelatedAllowanceforLoanandLeaseLossesMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseAll Other Real Estate [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AllOtherRealEstateMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With An Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithAnAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Related Allowance for Loan and Lease Losses (Member) | All Other Real Estate [Member] | Impaired Loans With An Allowance Recorded (Member)362true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:363false 5us-gaap_ImpairedFinancingReceivableRelatedAllowanceus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse10001USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse20002USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of allowance for credit losses related to recorded investment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 false2Impaired Loans With An Allowance Recorded364false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse328false USDtruefalse$c390_AsOf30Jun2013_AllOtherRealEstateMember_IndividuallyEvaluatedForImpairmentMember_RelatedAllowanceforLoanandLeaseLossesMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRelated Allowance for Loan and Lease Losses (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RelatedAllowanceforLoanandLeaseLossesMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseAll Other Real Estate [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AllOtherRealEstateMembermisn_LoansAxisexplicitMemberfalsefalseIndividually Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_IndividuallyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Related Allowance for Loan and Lease Losses (Member) | All Other Real Estate [Member] | Individually Evaluated for Impairment [Member]365true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:366false 5us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1us-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse10001USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse20002USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Total Loans Individually Evaluated For Impairment367false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse331false USDtruefalse$c397_AsOf30Jun2013_AllOtherRealEstateMember_CollectivelyEvaluatedForImpairmentMember_RelatedAllowanceforLoanandLeaseLossesMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRelated Allowance for Loan and Lease Losses (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RelatedAllowanceforLoanandLeaseLossesMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseAll Other Real Estate [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AllOtherRealEstateMembermisn_LoansAxisexplicitMemberfalsefalseCollectively Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_CollectivelyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Related Allowance for Loan and Lease Losses (Member) | All Other Real Estate [Member] | Collectively Evaluated for Impairment [Member]368true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:369false 5us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairmentus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse8800088USD$falsefalsefalse2truefalsefalse70007USD$falsefalsefalse3truefalsefalse3300033USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Loans Collectively Evaluated For Impairment370false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse334false USDtruefalse$c402_AsOf30Jun2013_AllOtherRealEstateMember_AcquiredWithDeterioratedCreditQualityMember_RelatedAllowanceforLoanandLeaseLossesMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRelated Allowance for Loan and Lease Losses (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RelatedAllowanceforLoanandLeaseLossesMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseAll Other Real Estate [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AllOtherRealEstateMembermisn_LoansAxisexplicitMemberfalsefalseAcquired with Deteriorated Credit Quality [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AcquiredWithDeterioratedCreditQualityMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Related Allowance for Loan and Lease Losses (Member) | All Other Real Estate [Member] | Acquired with Deteriorated Credit Quality [Member]371true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:372false 5us-gaap_FinancingReceivableAllowanceForCreditLossesAcquiredWithDeterioratedCreditQualityus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse00USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryThe valuation allowance for financing receivables acquired with deteriorated credit quality.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Loans Acquired With Deteriorated Credit Quality373false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse336false USDtruefalse$c408_AsOf30Jun2013_AllOtherRealEstateMember_LoansHeldforInvestmentMember_RelatedAllowanceforLoanandLeaseLossesMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRelated Allowance for Loan and Lease Losses (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RelatedAllowanceforLoanandLeaseLossesMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseAll Other Real Estate [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AllOtherRealEstateMembermisn_LoansAxisexplicitMemberfalsefalseLoans Held for Investment (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_LoansHeldforInvestmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Related Allowance for Loan and Lease Losses (Member) | All Other Real Estate [Member] | Loans Held for Investment (Member)374true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:375false 5us-gaap_NotesReceivableNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse8900089USD$falsefalsefalse2truefalsefalse70007USD$falsefalsefalse3truefalsefalse3500035USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3 -Article 5 false2Total Loans Held for Investment376false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse339false USDtruefalse$c384_AsOf30Jun2013_CommericalAndIndustrialMember_ImpairedLoansWithAnAllowanceRecordedMember_RelatedAllowanceforLoanandLeaseLossesMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRelated Allowance for Loan and Lease Losses (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RelatedAllowanceforLoanandLeaseLossesMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseCommerical and Industrial [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_CommericalAndIndustrialMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With An Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithAnAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Related Allowance for Loan and Lease Losses (Member) | Commerical and Industrial [Member] | Impaired Loans With An Allowance Recorded (Member)377true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:378false 5us-gaap_ImpairedFinancingReceivableRelatedAllowanceus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse605000605USD$falsefalsefalse2truefalsefalse135000135USD$falsefalsefalse3truefalsefalse683000683USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of allowance for credit losses related to recorded investment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 false2Impaired Loans With An Allowance Recorded379false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse342false USDtruefalse$c391_AsOf30Jun2013_CommericalAndIndustrialMember_IndividuallyEvaluatedForImpairmentMember_RelatedAllowanceforLoanandLeaseLossesMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRelated Allowance for Loan and Lease Losses (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RelatedAllowanceforLoanandLeaseLossesMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseCommerical and Industrial [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_CommericalAndIndustrialMembermisn_LoansAxisexplicitMemberfalsefalseIndividually Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_IndividuallyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Related Allowance for Loan and Lease Losses (Member) | Commerical and Industrial [Member] | Individually Evaluated for Impairment [Member]380true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:381false 5us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1us-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse605000605USD$falsefalsefalse2truefalsefalse135000135USD$falsefalsefalse3truefalsefalse683000683USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Total Loans Individually Evaluated For Impairment382false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse345false USDtruefalse$c398_AsOf30Jun2013_CommericalAndIndustrialMember_CollectivelyEvaluatedForImpairmentMember_RelatedAllowanceforLoanandLeaseLossesMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRelated Allowance for Loan and Lease Losses (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RelatedAllowanceforLoanandLeaseLossesMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseCommerical and Industrial [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_CommericalAndIndustrialMembermisn_LoansAxisexplicitMemberfalsefalseCollectively Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_CollectivelyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Related Allowance for Loan and Lease Losses (Member) | Commerical and Industrial [Member] | Collectively Evaluated for Impairment [Member]383true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:384false 5us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairmentus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse894000894USD$falsefalsefalse2truefalsefalse10630001063USD$falsefalsefalse3truefalsefalse10520001052USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Loans Collectively Evaluated For Impairment385false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse348false USDtruefalse$c409_AsOf30Jun2013_CommericalAndIndustrialMember_LoansHeldforInvestmentMember_RelatedAllowanceforLoanandLeaseLossesMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRelated Allowance for Loan and Lease Losses (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RelatedAllowanceforLoanandLeaseLossesMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseCommerical and Industrial [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_CommericalAndIndustrialMembermisn_LoansAxisexplicitMemberfalsefalseLoans Held for Investment (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_LoansHeldforInvestmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Related Allowance for Loan and Lease Losses (Member) | Commerical and Industrial [Member] | Loans Held for Investment (Member)386true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:387false 5us-gaap_NotesReceivableNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse14990001499USD$falsefalsefalse2truefalsefalse11980001198USD$falsefalsefalse3truefalsefalse17350001735USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3 -Article 5 false2Total Loans Held for Investment388false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse351false USDtruefalse$c535_AsOf31Dec2012_ConsumerAndAllOtherLoansAndLeasesMember_ImpairedLoansWithAnAllowanceRecordedMember_RelatedAllowanceforLoanandLeaseLossesMemberhttp://www.sec.gov/CIK0001129920instant2012-12-31T00:00:000001-01-01T00:00:00falsefalseRelated Allowance for Loan and Lease Losses (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RelatedAllowanceforLoanandLeaseLossesMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseConsumer and All Other Loans and Leases [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ConsumerAndAllOtherLoansAndLeasesMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With An Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithAnAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Related Allowance for Loan and Lease Losses (Member) | Consumer and All Other Loans and Leases [Member] | Impaired Loans With An Allowance Recorded (Member)389true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:390false 5us-gaap_ImpairedFinancingReceivableRelatedAllowanceus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of allowance for credit losses related to recorded investment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 false2Impaired Loans With An Allowance Recorded391false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse353false USDtruefalse$c543_AsOf31Dec2012_ConsumerAndAllOtherLoansAndLeasesMember_IndividuallyEvaluatedForImpairmentMember_RelatedAllowanceforLoanandLeaseLossesMemberhttp://www.sec.gov/CIK0001129920instant2012-12-31T00:00:000001-01-01T00:00:00falsefalseRelated Allowance for Loan and Lease Losses (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RelatedAllowanceforLoanandLeaseLossesMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseConsumer and All Other Loans and Leases [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ConsumerAndAllOtherLoansAndLeasesMembermisn_LoansAxisexplicitMemberfalsefalseIndividually Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_IndividuallyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Related Allowance for Loan and Lease Losses (Member) | Consumer and All Other Loans and Leases [Member] | Individually Evaluated for Impairment [Member]392true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:393false 5us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1us-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Total Loans Individually Evaluated For Impairment394false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse355false USDtruefalse$c399_AsOf30Jun2013_ConsumerAndAllOtherLoansAndLeasesMember_CollectivelyEvaluatedForImpairmentMember_RelatedAllowanceforLoanandLeaseLossesMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRelated Allowance for Loan and Lease Losses (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RelatedAllowanceforLoanandLeaseLossesMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseConsumer and All Other Loans and Leases [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ConsumerAndAllOtherLoansAndLeasesMembermisn_LoansAxisexplicitMemberfalsefalseCollectively Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_CollectivelyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Related Allowance for Loan and Lease Losses (Member) | Consumer and All Other Loans and Leases [Member] | Collectively Evaluated for Impairment [Member]395true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:396false 5us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairmentus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse103000103USD$falsefalsefalse2truefalsefalse133000133USD$falsefalsefalse3truefalsefalse5100051USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Loans Collectively Evaluated For Impairment397false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse358false USDtruefalse$c403_AsOf30Jun2013_ConsumerAndAllOtherLoansAndLeasesMember_AcquiredWithDeterioratedCreditQualityMember_RelatedAllowanceforLoanandLeaseLossesMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRelated Allowance for Loan and Lease Losses (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RelatedAllowanceforLoanandLeaseLossesMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseConsumer and All Other Loans and Leases [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ConsumerAndAllOtherLoansAndLeasesMembermisn_LoansAxisexplicitMemberfalsefalseAcquired with Deteriorated Credit Quality [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AcquiredWithDeterioratedCreditQualityMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Related Allowance for Loan and Lease Losses (Member) | Consumer and All Other Loans and Leases [Member] | Acquired with Deteriorated Credit Quality [Member]398true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:399false 5us-gaap_FinancingReceivableAllowanceForCreditLossesAcquiredWithDeterioratedCreditQualityus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse00USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryThe valuation allowance for financing receivables acquired with deteriorated credit quality.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Loans Acquired With Deteriorated Credit Quality400false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse360false USDtruefalse$c410_AsOf30Jun2013_ConsumerAndAllOtherLoansAndLeasesMember_LoansHeldforInvestmentMember_RelatedAllowanceforLoanandLeaseLossesMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRelated Allowance for Loan and Lease Losses (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RelatedAllowanceforLoanandLeaseLossesMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseConsumer and All Other Loans and Leases [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ConsumerAndAllOtherLoansAndLeasesMembermisn_LoansAxisexplicitMemberfalsefalseLoans Held for Investment (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_LoansHeldforInvestmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Related Allowance for Loan and Lease Losses (Member) | Consumer and All Other Loans and Leases [Member] | Loans Held for Investment (Member)401true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:402false 5us-gaap_NotesReceivableNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse103000103USD$falsefalsefalse2truefalsefalse133000133USD$falsefalsefalse3truefalsefalse5100051USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3 -Article 5 false2Total Loans Held for Investment403false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse363false USDtruefalse$c400_AsOf30Jun2013_UnallocatedMember_CollectivelyEvaluatedForImpairmentMember_RelatedAllowanceforLoanandLeaseLossesMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRelated Allowance for Loan and Lease Losses (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RelatedAllowanceforLoanandLeaseLossesMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseUnallocated [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_UnallocatedMembermisn_LoansAxisexplicitMemberfalsefalseCollectively Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_CollectivelyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Related Allowance for Loan and Lease Losses (Member) | Unallocated [Member] | Collectively Evaluated for Impairment [Member]404true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:405false 5us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairmentus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse132000132USD$falsefalsefalse2truefalsefalse3100031USD$falsefalsefalse3truefalsefalse10001USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Loans Collectively Evaluated For Impairment406false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse366false USDtruefalse$c411_AsOf30Jun2013_UnallocatedMember_LoansHeldforInvestmentMember_RelatedAllowanceforLoanandLeaseLossesMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRelated Allowance for Loan and Lease Losses (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RelatedAllowanceforLoanandLeaseLossesMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseUnallocated [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_UnallocatedMembermisn_LoansAxisexplicitMemberfalsefalseLoans Held for Investment (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_LoansHeldforInvestmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Related Allowance for Loan and Lease Losses (Member) | Unallocated [Member] | Loans Held for Investment (Member)407true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:408false 5us-gaap_NotesReceivableNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse132000132USD$falsefalsefalse2truefalsefalse3100031USD$falsefalsefalse3truefalsefalse10001USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3 -Article 5 false2Total Loans Held for Investment409false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse369false USDtruefalse$c385_AsOf30Jun2013_ImpairedLoansWithAnAllowanceRecordedMember_RelatedAllowanceforLoanandLeaseLossesMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRelated Allowance for Loan and Lease Losses (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RelatedAllowanceforLoanandLeaseLossesMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseImpaired Loans With An Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithAnAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Related Allowance for Loan and Lease Losses (Member) | Impaired Loans With An Allowance Recorded (Member)410true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:411false 5us-gaap_ImpairedFinancingReceivableRelatedAllowanceus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse12250001225USD$falsefalsefalse2truefalsefalse274000274USD$falsefalsefalse3truefalsefalse12310001231USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of allowance for credit losses related to recorded investment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 false2Impaired Loans With An Allowance Recorded412false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse372false USDtruefalse$c392_AsOf30Jun2013_IndividuallyEvaluatedForImpairmentMember_RelatedAllowanceforLoanandLeaseLossesMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRelated Allowance for Loan and Lease Losses (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RelatedAllowanceforLoanandLeaseLossesMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseIndividually Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_IndividuallyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Related Allowance for Loan and Lease Losses (Member) | Individually Evaluated for Impairment [Member]413true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:414false 5us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1us-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse12250001225USD$falsefalsefalse2truefalsefalse274000274USD$falsefalsefalse3truefalsefalse12310001231USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Total Loans Individually Evaluated For Impairment415false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse375false USDtruefalse$c401_AsOf30Jun2013_CollectivelyEvaluatedForImpairmentMember_RelatedAllowanceforLoanandLeaseLossesMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRelated Allowance for Loan and Lease Losses (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RelatedAllowanceforLoanandLeaseLossesMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseCollectively Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_CollectivelyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Related Allowance for Loan and Lease Losses (Member) | Collectively Evaluated for Impairment [Member]416true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:417false 5us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairmentus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse30070003007USD$falsefalsefalse2truefalsefalse35070003507USD$falsefalsefalse3truefalsefalse30110003011USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 false2Loans Collectively Evaluated For Impairment418false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse378false USDtruefalse$c412_AsOf30Jun2013_LoansHeldforInvestmentMember_RelatedAllowanceforLoanandLeaseLossesMemberhttp://www.sec.gov/CIK0001129920instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRelated Allowance for Loan and Lease Losses (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_RelatedAllowanceforLoanandLeaseLossesMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseLoans Held for Investment (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_LoansHeldforInvestmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Related Allowance for Loan and Lease Losses (Member) | Loans Held for Investment (Member)419true 4misn_RecordedInvestmentAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Recorded Investment:420false 5us-gaap_NotesReceivableNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse42320004232USD$falsefalsefalse2truefalsefalse37810003781USD$falsefalsefalse3truefalsefalse42420004242USD$falsefalsefalsexbrli:monetaryItemTypemonetaryNet amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3 -Article 5 false2Total Loans Held for Investment421false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse381false USDtruefalse$c413_From1Jan2013To30Jun2013_ConstructionAndLandDevelopmentMember_ImpairedLoansWithAnAllowanceRecordedMember_AverageRecordedInvestmentinImpairedLoansMemberhttp://www.sec.gov/CIK0001129920duration2013-01-01T00:00:002013-06-30T00:00:00falsefalseAverage Recorded Investment in Impaired Loans (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AverageRecordedInvestmentinImpairedLoansMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseConstruction and Land Development [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ConstructionAndLandDevelopmentMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With An Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithAnAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Average Recorded Investment in Impaired Loans (Member) | Construction and Land Development [Member] | Impaired Loans With An Allowance Recorded (Member)422true 5misn_AverageRecordedInvestmentInImpairedLoansAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Average Recorded Investment in Impaired Loans:423false 6us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestmentus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse295000295USD$falsefalsefalse2truefalsefalse199000199USD$falsefalsefalse3truefalsefalse198000198USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of average investment of impaired financing receivables for which there is a related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5258-111524 false2Impaired Loans With An Allowance Recorded424false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse384false USDtruefalse$c752_From1Jan2012To30Jun2012_ConstructionAndLandDevelopmentMember_ImpairedLoansWithNoAllowanceRecordedMember_AverageRecordedInvestmentinImpairedLoansMemberhttp://www.sec.gov/CIK0001129920duration2012-01-01T00:00:002012-06-30T00:00:00falsefalseAverage Recorded Investment in Impaired Loans (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AverageRecordedInvestmentinImpairedLoansMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseConstruction and Land Development [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ConstructionAndLandDevelopmentMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With No Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithNoAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Average Recorded Investment in Impaired Loans (Member) | Construction and Land Development [Member] | Impaired Loans With No Allowance Recorded (Member)425true 5misn_AverageRecordedInvestmentInImpairedLoansAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Average Recorded Investment in Impaired Loans:426false 6us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestmentus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2truefalsefalse544000544USD$falsefalsefalse3truefalsefalse533000533USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of average investment of impaired financing receivables for which there is no related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5258-111524 false2Impaired Loans With No Allowance Recorded427false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse386false USDtruefalse$c420_From1Jan2013To30Jun2013_ConstructionAndLandDevelopmentMember_IndividuallyEvaluatedForImpairmentMember_AverageRecordedInvestmentinImpairedLoansMemberhttp://www.sec.gov/CIK0001129920duration2013-01-01T00:00:002013-06-30T00:00:00falsefalseAverage Recorded Investment in Impaired Loans (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AverageRecordedInvestmentinImpairedLoansMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseConstruction and Land Development [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ConstructionAndLandDevelopmentMembermisn_LoansAxisexplicitMemberfalsefalseIndividually Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_IndividuallyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Average Recorded Investment in Impaired Loans (Member) | Construction and Land Development [Member] | Individually Evaluated for Impairment [Member]428true 5misn_AverageRecordedInvestmentInImpairedLoansAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Average Recorded Investment in Impaired Loans:429false 6us-gaap_ImpairedFinancingReceivableAverageRecordedInvestmentus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse295000295USD$falsefalsefalse2truefalsefalse743000743USD$falsefalsefalse3truefalsefalse731000731USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAverage amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5258-111524 false2Total Loans Individually Evaluated For Impairment430false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse389false USDtruefalse$c414_From1Jan2013To30Jun2013_OwnerOccupiedMember_ImpairedLoansWithAnAllowanceRecordedMember_AverageRecordedInvestmentinImpairedLoansMemberhttp://www.sec.gov/CIK0001129920duration2013-01-01T00:00:002013-06-30T00:00:00falsefalseAverage Recorded Investment in Impaired Loans (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AverageRecordedInvestmentinImpairedLoansMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseOwner Occupied [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_OwnerOccupiedMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With An Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithAnAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Average Recorded Investment in Impaired Loans (Member) | Owner Occupied [Member] | Impaired Loans With An Allowance Recorded (Member)431true 5misn_AverageRecordedInvestmentInImpairedLoansAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Average Recorded Investment in Impaired Loans:432false 6us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestmentus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse670000670USD$falsefalsefalse2truefalsefalse588000588USD$falsefalsefalse3truefalsefalse655000655USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of average investment of impaired financing receivables for which there is a related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5258-111524 false2Impaired Loans With An Allowance Recorded433false 6us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestmentus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse15570001557USD$falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of average investment of impaired financing receivables for which there is no related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5258-111524 false2Impaired Loans With No Allowance Recorded434false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse392false USDtruefalse$c753_From1Jan2012To30Jun2012_OwnerOccupiedMember_ImpairedLoansWithNoAllowanceRecordedMember_AverageRecordedInvestmentinImpairedLoansMemberhttp://www.sec.gov/CIK0001129920duration2012-01-01T00:00:002012-06-30T00:00:00falsefalseAverage Recorded Investment in Impaired Loans (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AverageRecordedInvestmentinImpairedLoansMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseOwner Occupied [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_OwnerOccupiedMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With No Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithNoAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Average Recorded Investment in Impaired Loans (Member) | Owner Occupied [Member] | Impaired Loans With No Allowance Recorded (Member)435true 5misn_AverageRecordedInvestmentInImpairedLoansAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Average Recorded Investment in Impaired Loans:436false 6us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestmentus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2truefalsefalse12940001294USD$falsefalsefalse3truefalsefalse13780001378USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of average investment of impaired financing receivables for which there is no related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5258-111524 false2Impaired Loans With No Allowance Recorded437false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse394false USDtruefalse$c421_From1Jan2013To30Jun2013_OwnerOccupiedMember_IndividuallyEvaluatedForImpairmentMember_AverageRecordedInvestmentinImpairedLoansMemberhttp://www.sec.gov/CIK0001129920duration2013-01-01T00:00:002013-06-30T00:00:00falsefalseAverage Recorded Investment in Impaired Loans (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AverageRecordedInvestmentinImpairedLoansMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseOwner Occupied [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_OwnerOccupiedMembermisn_LoansAxisexplicitMemberfalsefalseIndividually Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_IndividuallyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Average Recorded Investment in Impaired Loans (Member) | Owner Occupied [Member] | Individually Evaluated for Impairment [Member]438true 5misn_AverageRecordedInvestmentInImpairedLoansAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Average Recorded Investment in Impaired Loans:439false 6us-gaap_ImpairedFinancingReceivableAverageRecordedInvestmentus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse22270002227USD$falsefalsefalse2truefalsefalse18820001882USD$falsefalsefalse3truefalsefalse20330002033USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAverage amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5258-111524 false2Total Loans Individually Evaluated For Impairment440false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse397false USDtruefalse$c415_From1Jan2013To30Jun2013_NonOwnerOccupiedMember_ImpairedLoansWithAnAllowanceRecordedMember_AverageRecordedInvestmentinImpairedLoansMemberhttp://www.sec.gov/CIK0001129920duration2013-01-01T00:00:002013-06-30T00:00:00falsefalseAverage Recorded Investment in Impaired Loans (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AverageRecordedInvestmentinImpairedLoansMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseNon Owner Occupied [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_NonOwnerOccupiedMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With An Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithAnAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Average Recorded Investment in Impaired Loans (Member) | Non Owner Occupied [Member] | Impaired Loans With An Allowance Recorded (Member)441true 5misn_AverageRecordedInvestmentInImpairedLoansAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Average Recorded Investment in Impaired Loans:442false 6us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestmentus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse733000733USD$falsefalsefalse2falsefalsefalse00falsefalsefalse3truefalsefalse303000303USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of average investment of impaired financing receivables for which there is a related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5258-111524 false2Impaired Loans With An Allowance Recorded443false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse399false USDtruefalse$c754_From1Jan2012To30Jun2012_NonOwnerOccupiedMember_ImpairedLoansWithNoAllowanceRecordedMember_AverageRecordedInvestmentinImpairedLoansMemberhttp://www.sec.gov/CIK0001129920duration2012-01-01T00:00:002012-06-30T00:00:00falsefalseAverage Recorded Investment in Impaired Loans (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AverageRecordedInvestmentinImpairedLoansMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseNon Owner Occupied [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_NonOwnerOccupiedMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With No Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithNoAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Average Recorded Investment in Impaired Loans (Member) | Non Owner Occupied [Member] | Impaired Loans With No Allowance Recorded (Member)444true 5misn_AverageRecordedInvestmentInImpairedLoansAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Average Recorded Investment in Impaired Loans:445false 6us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestmentus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse109000109USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of average investment of impaired financing receivables for which there is no related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5258-111524 false2Impaired Loans With No Allowance Recorded446false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse401false USDtruefalse$c422_From1Jan2013To30Jun2013_NonOwnerOccupiedMember_IndividuallyEvaluatedForImpairmentMember_AverageRecordedInvestmentinImpairedLoansMemberhttp://www.sec.gov/CIK0001129920duration2013-01-01T00:00:002013-06-30T00:00:00falsefalseAverage Recorded Investment in Impaired Loans (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AverageRecordedInvestmentinImpairedLoansMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseNon Owner Occupied [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_NonOwnerOccupiedMembermisn_LoansAxisexplicitMemberfalsefalseIndividually Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_IndividuallyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Average Recorded Investment in Impaired Loans (Member) | Non Owner Occupied [Member] | Individually Evaluated for Impairment [Member]447true 5misn_AverageRecordedInvestmentInImpairedLoansAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Average Recorded Investment in Impaired Loans:448false 6us-gaap_ImpairedFinancingReceivableAverageRecordedInvestmentus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse733000733USD$falsefalsefalse2falsefalsefalse00falsefalsefalse3truefalsefalse412000412USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAverage amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5258-111524 false2Total Loans Individually Evaluated For Impairment449false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse403false USDtruefalse$c416_From1Jan2013To30Jun2013_ResidentialRealEstateMember_ImpairedLoansWithAnAllowanceRecordedMember_AverageRecordedInvestmentinImpairedLoansMemberhttp://www.sec.gov/CIK0001129920duration2013-01-01T00:00:002013-06-30T00:00:00falsefalseAverage Recorded Investment in Impaired Loans (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AverageRecordedInvestmentinImpairedLoansMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseResidential Real Estate [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_ResidentialRealEstateMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With An Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithAnAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Average Recorded Investment in Impaired Loans (Member) | Residential Real Estate [Member] | Impaired Loans With An Allowance Recorded (Member)450true 5misn_AverageRecordedInvestmentInImpairedLoansAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Average Recorded Investment in Impaired Loans:451false 6us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestmentus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse967000967USD$falsefalsefalse2truefalsefalse185000185USD$falsefalsefalse3truefalsefalse291000291USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of average investment of impaired financing receivables for which there is a related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5258-111524 false2Impaired Loans With An Allowance Recorded452false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse406false USDtruefalse$c755_From1Jan2012To30Jun2012_ResidentialRealEstateMember_ImpairedLoansWithNoAllowanceRecordedMember_AverageRecordedInvestmentinImpairedLoansMemberhttp://www.sec.gov/CIK0001129920duration2012-01-01T00:00:002012-06-30T00:00:00falsefalseAverage Recorded Investment in Impaired Loans (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AverageRecordedInvestmentinImpairedLoansMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseResidential Real Estate [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_ResidentialRealEstateMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With No Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithNoAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Average Recorded Investment in Impaired Loans (Member) | Residential Real Estate [Member] | Impaired Loans With No Allowance Recorded (Member)453true 5misn_AverageRecordedInvestmentInImpairedLoansAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Average Recorded Investment in Impaired Loans:454false 6us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestmentus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse782000782USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of average investment of impaired financing receivables for which there is no related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5258-111524 false2Impaired Loans With No Allowance Recorded455false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse408false USDtruefalse$c423_From1Jan2013To30Jun2013_ResidentialRealEstateMember_IndividuallyEvaluatedForImpairmentMember_AverageRecordedInvestmentinImpairedLoansMemberhttp://www.sec.gov/CIK0001129920duration2013-01-01T00:00:002013-06-30T00:00:00falsefalseAverage Recorded Investment in Impaired Loans (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AverageRecordedInvestmentinImpairedLoansMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseResidential Real Estate [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_ResidentialRealEstateMembermisn_LoansAxisexplicitMemberfalsefalseIndividually Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_IndividuallyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Average Recorded Investment in Impaired Loans (Member) | Residential Real Estate [Member] | Individually Evaluated for Impairment [Member]456true 5misn_AverageRecordedInvestmentInImpairedLoansAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Average Recorded Investment in Impaired Loans:457false 6us-gaap_ImpairedFinancingReceivableAverageRecordedInvestmentus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse967000967USD$falsefalsefalse2truefalsefalse185000185USD$falsefalsefalse3truefalsefalse10730001073USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAverage amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5258-111524 false2Total Loans Individually Evaluated For Impairment458false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse411false USDtruefalse$c417_From1Jan2013To30Jun2013_AllOtherRealEstateMember_ImpairedLoansWithAnAllowanceRecordedMember_AverageRecordedInvestmentinImpairedLoansMemberhttp://www.sec.gov/CIK0001129920duration2013-01-01T00:00:002013-06-30T00:00:00falsefalseAverage Recorded Investment in Impaired Loans (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AverageRecordedInvestmentinImpairedLoansMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseAll Other Real Estate [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AllOtherRealEstateMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With An Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithAnAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Average Recorded Investment in Impaired Loans (Member) | All Other Real Estate [Member] | Impaired Loans With An Allowance Recorded (Member)459true 5misn_AverageRecordedInvestmentInImpairedLoansAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Average Recorded Investment in Impaired Loans:460false 6us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestmentus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse2600026USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse60006USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of average investment of impaired financing receivables for which there is a related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5258-111524 false2Impaired Loans With An Allowance Recorded461false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse414false USDtruefalse$c756_From1Jan2012To30Jun2012_AllOtherRealEstateMember_ImpairedLoansWithNoAllowanceRecordedMember_AverageRecordedInvestmentinImpairedLoansMemberhttp://www.sec.gov/CIK0001129920duration2012-01-01T00:00:002012-06-30T00:00:00falsefalseAverage Recorded Investment in Impaired Loans (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AverageRecordedInvestmentinImpairedLoansMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseAll Other Real Estate [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AllOtherRealEstateMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With No Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithNoAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Average Recorded Investment in Impaired Loans (Member) | All Other Real Estate [Member] | Impaired Loans With No Allowance Recorded (Member)462true 5misn_AverageRecordedInvestmentInImpairedLoansAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Average Recorded Investment in Impaired Loans:463false 6us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestmentus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of average investment of impaired financing receivables for which there is no related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5258-111524 false2Impaired Loans With No Allowance Recorded464false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse416false USDtruefalse$c424_From1Jan2013To30Jun2013_AllOtherRealEstateMember_IndividuallyEvaluatedForImpairmentMember_AverageRecordedInvestmentinImpairedLoansMemberhttp://www.sec.gov/CIK0001129920duration2013-01-01T00:00:002013-06-30T00:00:00falsefalseAverage Recorded Investment in Impaired Loans (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AverageRecordedInvestmentinImpairedLoansMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseAll Other Real Estate [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AllOtherRealEstateMembermisn_LoansAxisexplicitMemberfalsefalseIndividually Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_IndividuallyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Average Recorded Investment in Impaired Loans (Member) | All Other Real Estate [Member] | Individually Evaluated for Impairment [Member]465true 5misn_AverageRecordedInvestmentInImpairedLoansAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Average Recorded Investment in Impaired Loans:466false 6us-gaap_ImpairedFinancingReceivableAverageRecordedInvestmentus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse2600026USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse60006USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAverage amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5258-111524 false2Total Loans Individually Evaluated For Impairment467false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse419false USDtruefalse$c418_From1Jan2013To30Jun2013_CommericalAndIndustrialMember_ImpairedLoansWithAnAllowanceRecordedMember_AverageRecordedInvestmentinImpairedLoansMemberhttp://www.sec.gov/CIK0001129920duration2013-01-01T00:00:002013-06-30T00:00:00falsefalseAverage Recorded Investment in Impaired Loans (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AverageRecordedInvestmentinImpairedLoansMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseCommerical and Industrial [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_CommericalAndIndustrialMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With An Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithAnAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Average Recorded Investment in Impaired Loans (Member) | Commerical and Industrial [Member] | Impaired Loans With An Allowance Recorded (Member)468true 5misn_AverageRecordedInvestmentInImpairedLoansAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Average Recorded Investment in Impaired Loans:469false 6us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestmentus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse15270001527USD$falsefalsefalse2truefalsefalse350000350USD$falsefalsefalse3truefalsefalse791000791USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of average investment of impaired financing receivables for which there is a related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5258-111524 false2Impaired Loans With An Allowance Recorded470false 6us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestmentus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse10470001047USD$falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of average investment of impaired financing receivables for which there is no related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5258-111524 false2Impaired Loans With No Allowance Recorded471false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse422false USDtruefalse$c757_From1Jan2012To30Jun2012_CommericalAndIndustrialMember_ImpairedLoansWithNoAllowanceRecordedMember_AverageRecordedInvestmentinImpairedLoansMemberhttp://www.sec.gov/CIK0001129920duration2012-01-01T00:00:002012-06-30T00:00:00falsefalseAverage Recorded Investment in Impaired Loans (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AverageRecordedInvestmentinImpairedLoansMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseCommerical and Industrial [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_CommericalAndIndustrialMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With No Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithNoAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Average Recorded Investment in Impaired Loans (Member) | Commerical and Industrial [Member] | Impaired Loans With No Allowance Recorded (Member)472true 5misn_AverageRecordedInvestmentInImpairedLoansAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Average Recorded Investment in Impaired Loans:473false 6us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestmentus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2truefalsefalse590000590USD$falsefalsefalse3truefalsefalse14250001425USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of average investment of impaired financing receivables for which there is no related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5258-111524 false2Impaired Loans With No Allowance Recorded474false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse424false USDtruefalse$c425_From1Jan2013To30Jun2013_CommericalAndIndustrialMember_IndividuallyEvaluatedForImpairmentMember_AverageRecordedInvestmentinImpairedLoansMemberhttp://www.sec.gov/CIK0001129920duration2013-01-01T00:00:002013-06-30T00:00:00falsefalseAverage Recorded Investment in Impaired Loans (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AverageRecordedInvestmentinImpairedLoansMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseCommerical and Industrial [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_CommericalAndIndustrialMembermisn_LoansAxisexplicitMemberfalsefalseIndividually Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_IndividuallyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Average Recorded Investment in Impaired Loans (Member) | Commerical and Industrial [Member] | Individually Evaluated for Impairment [Member]475true 5misn_AverageRecordedInvestmentInImpairedLoansAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Average Recorded Investment in Impaired Loans:476false 6us-gaap_ImpairedFinancingReceivableAverageRecordedInvestmentus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse25740002574USD$falsefalsefalse2truefalsefalse940000940USD$falsefalsefalse3truefalsefalse22160002216USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAverage amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5258-111524 false2Total Loans Individually Evaluated For Impairment477false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse427false USDtruefalse$c750_From1Jan2012To30Jun2012_ConsumerAndAllOtherLoansAndLeasesMember_ImpairedLoansWithAnAllowanceRecordedMember_AverageRecordedInvestmentinImpairedLoansMemberhttp://www.sec.gov/CIK0001129920duration2012-01-01T00:00:002012-06-30T00:00:00falsefalseAverage Recorded Investment in Impaired Loans (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AverageRecordedInvestmentinImpairedLoansMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseConsumer and All Other Loans and Leases [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ConsumerAndAllOtherLoansAndLeasesMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With An Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithAnAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Average Recorded Investment in Impaired Loans (Member) | Consumer and All Other Loans and Leases [Member] | Impaired Loans With An Allowance Recorded (Member)478true 5misn_AverageRecordedInvestmentInImpairedLoansAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Average Recorded Investment in Impaired Loans:479false 6us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestmentus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of average investment of impaired financing receivables for which there is a related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5258-111524 false2Impaired Loans With An Allowance Recorded480false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse429false USDtruefalse$c758_From1Jan2012To30Jun2012_ConsumerAndAllOtherLoansAndLeasesMember_ImpairedLoansWithNoAllowanceRecordedMember_AverageRecordedInvestmentinImpairedLoansMemberhttp://www.sec.gov/CIK0001129920duration2012-01-01T00:00:002012-06-30T00:00:00falsefalseAverage Recorded Investment in Impaired Loans (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AverageRecordedInvestmentinImpairedLoansMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseConsumer and All Other Loans and Leases [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ConsumerAndAllOtherLoansAndLeasesMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With No Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithNoAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Average Recorded Investment in Impaired Loans (Member) | Consumer and All Other Loans and Leases [Member] | Impaired Loans With No Allowance Recorded (Member)481true 5misn_AverageRecordedInvestmentInImpairedLoansAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Average Recorded Investment in Impaired Loans:482false 6us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestmentus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of average investment of impaired financing receivables for which there is no related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5258-111524 false2Impaired Loans With No Allowance Recorded483false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse431false USDtruefalse$c765_From1Jan2012To30Jun2012_ConsumerAndAllOtherLoansAndLeasesMember_IndividuallyEvaluatedForImpairmentMember_AverageRecordedInvestmentinImpairedLoansMemberhttp://www.sec.gov/CIK0001129920duration2012-01-01T00:00:002012-06-30T00:00:00falsefalseAverage Recorded Investment in Impaired Loans (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AverageRecordedInvestmentinImpairedLoansMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseConsumer and All Other Loans and Leases [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ConsumerAndAllOtherLoansAndLeasesMembermisn_LoansAxisexplicitMemberfalsefalseIndividually Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_IndividuallyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Average Recorded Investment in Impaired Loans (Member) | Consumer and All Other Loans and Leases [Member] | Individually Evaluated for Impairment [Member]484true 5misn_AverageRecordedInvestmentInImpairedLoansAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Average Recorded Investment in Impaired Loans:485false 6us-gaap_ImpairedFinancingReceivableAverageRecordedInvestmentus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAverage amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5258-111524 false2Total Loans Individually Evaluated For Impairment486false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse433false USDtruefalse$c419_From1Jan2013To30Jun2013_ImpairedLoansWithAnAllowanceRecordedMember_AverageRecordedInvestmentinImpairedLoansMemberhttp://www.sec.gov/CIK0001129920duration2013-01-01T00:00:002013-06-30T00:00:00falsefalseAverage Recorded Investment in Impaired Loans (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AverageRecordedInvestmentinImpairedLoansMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseImpaired Loans With An Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithAnAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Average Recorded Investment in Impaired Loans (Member) | Impaired Loans With An Allowance Recorded (Member)487true 5misn_AverageRecordedInvestmentInImpairedLoansAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Average Recorded Investment in Impaired Loans:488false 6us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestmentus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse42180004218USD$falsefalsefalse2truefalsefalse13220001322USD$falsefalsefalse3truefalsefalse22440002244USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of average investment of impaired financing receivables for which there is a related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5258-111524 false2Impaired Loans With An Allowance Recorded489false 6us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestmentus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse26040002604USD$falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of average investment of impaired financing receivables for which there is no related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5258-111524 false2Impaired Loans With No Allowance Recorded490false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse436false USDtruefalse$c759_From1Jan2012To30Jun2012_ImpairedLoansWithNoAllowanceRecordedMember_AverageRecordedInvestmentinImpairedLoansMemberhttp://www.sec.gov/CIK0001129920duration2012-01-01T00:00:002012-06-30T00:00:00falsefalseAverage Recorded Investment in Impaired Loans (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AverageRecordedInvestmentinImpairedLoansMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseImpaired Loans With No Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithNoAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Average Recorded Investment in Impaired Loans (Member) | Impaired Loans With No Allowance Recorded (Member)491true 5misn_AverageRecordedInvestmentInImpairedLoansAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Average Recorded Investment in Impaired Loans:492false 6us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestmentus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2truefalsefalse24280002428USD$falsefalsefalse3truefalsefalse42270004227USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of average investment of impaired financing receivables for which there is no related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5258-111524 false2Impaired Loans With No Allowance Recorded493false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse438false USDtruefalse$c426_From1Jan2013To30Jun2013_IndividuallyEvaluatedForImpairmentMember_AverageRecordedInvestmentinImpairedLoansMemberhttp://www.sec.gov/CIK0001129920duration2013-01-01T00:00:002013-06-30T00:00:00falsefalseAverage Recorded Investment in Impaired Loans (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AverageRecordedInvestmentinImpairedLoansMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseIndividually Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_IndividuallyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Average Recorded Investment in Impaired Loans (Member) | Individually Evaluated for Impairment [Member]494true 5misn_AverageRecordedInvestmentInImpairedLoansAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Average Recorded Investment in Impaired Loans:495false 6us-gaap_ImpairedFinancingReceivableAverageRecordedInvestmentus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse68220006822USD$falsefalsefalse2truefalsefalse37500003750USD$falsefalsefalse3truefalsefalse64710006471USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAverage amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5258-111524 false2Total Loans Individually Evaluated For Impairment496false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse441false USDtruefalse$c767_From1Jan2012To30Jun2012_ConstructionAndLandDevelopmentMember_ImpairedLoansWithAnAllowanceRecordedMember_InterestIncomeRecognizedMemberhttp://www.sec.gov/CIK0001129920duration2012-01-01T00:00:002012-06-30T00:00:00falsefalseInterest Income Recognized (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_InterestIncomeRecognizedMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseConstruction and Land Development [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ConstructionAndLandDevelopmentMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With An Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithAnAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Interest Income Recognized (Member) | Construction and Land Development [Member] | Impaired Loans With An Allowance Recorded (Member)497true 5misn_InterestIncomeRecognizedOnImpairedLoansAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Interest Income Recognized on Impaired Loans:498false 6us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeAccrualMethodus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of interest income, recognized on accrual basis, on financing receivables, for which there is a related allowance for credit losses and are recognized as impaired.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 false2Impaired Loans With An Allowance Recorded499false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse443false USDtruefalse$c595_From1Jan2012To31Dec2012_ConstructionAndLandDevelopmentMember_ImpairedLoansWithNoAllowanceRecordedMember_InterestIncomeRecognizedMemberhttp://www.sec.gov/CIK0001129920duration2012-01-01T00:00:002012-12-31T00:00:00falsefalseInterest Income Recognized (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_InterestIncomeRecognizedMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseConstruction and Land Development [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ConstructionAndLandDevelopmentMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With No Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithNoAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Interest Income Recognized (Member) | Construction and Land Development [Member] | Impaired Loans With No Allowance Recorded (Member)500true 5misn_InterestIncomeRecognizedOnImpairedLoansAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Interest Income Recognized on Impaired Loans:501false 6us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceInterestIncomeAccrualMethodus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of interest income, recognized on accrual basis, on financing receivables that are recognized as impaired, for which there is no related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 false2Impaired Loans With No Allowance Recorded502false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse444false USDtruefalse$c603_From1Jan2012To31Dec2012_ConstructionAndLandDevelopmentMember_IndividuallyEvaluatedForImpairmentMember_InterestIncomeRecognizedMemberhttp://www.sec.gov/CIK0001129920duration2012-01-01T00:00:002012-12-31T00:00:00falsefalseInterest Income Recognized (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_InterestIncomeRecognizedMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseConstruction and Land Development [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ConstructionAndLandDevelopmentMembermisn_LoansAxisexplicitMemberfalsefalseIndividually Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_IndividuallyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Interest Income Recognized (Member) | Construction and Land Development [Member] | Individually Evaluated for Impairment [Member]503true 5misn_InterestIncomeRecognizedOnImpairedLoansAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Interest Income Recognized on Impaired Loans:504false 6us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethodus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 false2Total Loans Individually Evaluated For Impairment505false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse445false USDtruefalse$c768_From1Jan2012To30Jun2012_OwnerOccupiedMember_ImpairedLoansWithAnAllowanceRecordedMember_InterestIncomeRecognizedMemberhttp://www.sec.gov/CIK0001129920duration2012-01-01T00:00:002012-06-30T00:00:00falsefalseInterest Income Recognized (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_InterestIncomeRecognizedMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseOwner Occupied [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_OwnerOccupiedMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With An Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithAnAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Interest Income Recognized (Member) | Owner Occupied [Member] | Impaired Loans With An Allowance Recorded (Member)506true 5misn_InterestIncomeRecognizedOnImpairedLoansAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Interest Income Recognized on Impaired Loans:507false 6us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeAccrualMethodus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of interest income, recognized on accrual basis, on financing receivables, for which there is a related allowance for credit losses and are recognized as impaired.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 false2Impaired Loans With An Allowance Recorded508false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse447false USDtruefalse$c429_From1Jan2013To30Jun2013_OwnerOccupiedMember_ImpairedLoansWithNoAllowanceRecordedMember_InterestIncomeRecognizedMemberhttp://www.sec.gov/CIK0001129920duration2013-01-01T00:00:002013-06-30T00:00:00falsefalseInterest Income Recognized (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_InterestIncomeRecognizedMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseOwner Occupied [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_OwnerOccupiedMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With No Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithNoAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Interest Income Recognized (Member) | Owner Occupied [Member] | Impaired Loans With No Allowance Recorded (Member)509true 5misn_InterestIncomeRecognizedOnImpairedLoansAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Interest Income Recognized on Impaired Loans:510false 6us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceInterestIncomeAccrualMethodus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse10001USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of interest income, recognized on accrual basis, on financing receivables that are recognized as impaired, for which there is no related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 false2Impaired Loans With No Allowance Recorded511false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse450false USDtruefalse$c431_From1Jan2013To30Jun2013_OwnerOccupiedMember_IndividuallyEvaluatedForImpairmentMember_InterestIncomeRecognizedMemberhttp://www.sec.gov/CIK0001129920duration2013-01-01T00:00:002013-06-30T00:00:00falsefalseInterest Income Recognized (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_InterestIncomeRecognizedMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseOwner Occupied [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_OwnerOccupiedMembermisn_LoansAxisexplicitMemberfalsefalseIndividually Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_IndividuallyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Interest Income Recognized (Member) | Owner Occupied [Member] | Individually Evaluated for Impairment [Member]512true 5misn_InterestIncomeRecognizedOnImpairedLoansAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Interest Income Recognized on Impaired Loans:513false 6us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethodus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse10001USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 false2Total Loans Individually Evaluated For Impairment514false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse453false USDtruefalse$c769_From1Jan2012To30Jun2012_NonOwnerOccupiedMember_ImpairedLoansWithAnAllowanceRecordedMember_InterestIncomeRecognizedMemberhttp://www.sec.gov/CIK0001129920duration2012-01-01T00:00:002012-06-30T00:00:00falsefalseInterest Income Recognized (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_InterestIncomeRecognizedMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseNon Owner Occupied [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_NonOwnerOccupiedMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With An Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithAnAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Interest Income Recognized (Member) | Non Owner Occupied [Member] | Impaired Loans With An Allowance Recorded (Member)515true 5misn_InterestIncomeRecognizedOnImpairedLoansAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Interest Income Recognized on Impaired Loans:516false 6us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeAccrualMethodus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of interest income, recognized on accrual basis, on financing receivables, for which there is a related allowance for credit losses and are recognized as impaired.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 false2Impaired Loans With An Allowance Recorded517false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse455false USDtruefalse$c776_From1Jan2012To30Jun2012_NonOwnerOccupiedMember_ImpairedLoansWithNoAllowanceRecordedMember_InterestIncomeRecognizedMemberhttp://www.sec.gov/CIK0001129920duration2012-01-01T00:00:002012-06-30T00:00:00falsefalseInterest Income Recognized (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_InterestIncomeRecognizedMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseNon Owner Occupied [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_NonOwnerOccupiedMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With No Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithNoAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Interest Income Recognized (Member) | Non Owner Occupied [Member] | Impaired Loans With No Allowance Recorded (Member)518true 5misn_InterestIncomeRecognizedOnImpairedLoansAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Interest Income Recognized on Impaired Loans:519false 6us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceInterestIncomeAccrualMethodus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse10001USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of interest income, recognized on accrual basis, on financing receivables that are recognized as impaired, for which there is no related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 false2Impaired Loans With No Allowance Recorded520false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse457false USDtruefalse$c780_From1Jan2012To30Jun2012_NonOwnerOccupiedMember_IndividuallyEvaluatedForImpairmentMember_InterestIncomeRecognizedMemberhttp://www.sec.gov/CIK0001129920duration2012-01-01T00:00:002012-06-30T00:00:00falsefalseInterest Income Recognized (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_InterestIncomeRecognizedMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseNon Owner Occupied [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_NonOwnerOccupiedMembermisn_LoansAxisexplicitMemberfalsefalseIndividually Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_IndividuallyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Interest Income Recognized (Member) | Non Owner Occupied [Member] | Individually Evaluated for Impairment [Member]521true 5misn_InterestIncomeRecognizedOnImpairedLoansAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Interest Income Recognized on Impaired Loans:522false 6us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethodus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse10001USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 false2Total Loans Individually Evaluated For Impairment523false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse459false USDtruefalse$c427_From1Jan2013To30Jun2013_ResidentialRealEstateMember_ImpairedLoansWithAnAllowanceRecordedMember_InterestIncomeRecognizedMemberhttp://www.sec.gov/CIK0001129920duration2013-01-01T00:00:002013-06-30T00:00:00falsefalseInterest Income Recognized (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_InterestIncomeRecognizedMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseResidential Real Estate [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_ResidentialRealEstateMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With An Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithAnAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Interest Income Recognized (Member) | Residential Real Estate [Member] | Impaired Loans With An Allowance Recorded (Member)524true 5misn_InterestIncomeRecognizedOnImpairedLoansAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Interest Income Recognized on Impaired Loans:525false 6us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeAccrualMethodus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse1900019USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse1000010USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of interest income, recognized on accrual basis, on financing receivables, for which there is a related allowance for credit losses and are recognized as impaired.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 false2Impaired Loans With An Allowance Recorded526false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse462false USDtruefalse$c598_From1Jan2012To31Dec2012_ResidentialRealEstateMember_ImpairedLoansWithNoAllowanceRecordedMember_InterestIncomeRecognizedMemberhttp://www.sec.gov/CIK0001129920duration2012-01-01T00:00:002012-12-31T00:00:00falsefalseInterest Income Recognized (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_InterestIncomeRecognizedMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseResidential Real Estate [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_ResidentialRealEstateMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With No Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithNoAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Interest Income Recognized (Member) | Residential Real Estate [Member] | Impaired Loans With No Allowance Recorded (Member)527true 5misn_InterestIncomeRecognizedOnImpairedLoansAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Interest Income Recognized on Impaired Loans:528false 6us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceInterestIncomeAccrualMethodus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of interest income, recognized on accrual basis, on financing receivables that are recognized as impaired, for which there is no related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 false2Impaired Loans With No Allowance Recorded529false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse463false USDtruefalse$c432_From1Jan2013To30Jun2013_ResidentialRealEstateMember_IndividuallyEvaluatedForImpairmentMember_InterestIncomeRecognizedMemberhttp://www.sec.gov/CIK0001129920duration2013-01-01T00:00:002013-06-30T00:00:00falsefalseInterest Income Recognized (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_InterestIncomeRecognizedMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseResidential Real Estate [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_ResidentialRealEstateMembermisn_LoansAxisexplicitMemberfalsefalseIndividually Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_IndividuallyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Interest Income Recognized (Member) | Residential Real Estate [Member] | Individually Evaluated for Impairment [Member]530true 5misn_InterestIncomeRecognizedOnImpairedLoansAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Interest Income Recognized on Impaired Loans:531false 6us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethodus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse1900019USD$falsefalsefalse2falsefalsefalse00falsefalsefalse3truefalsefalse1000010USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 false2Total Loans Individually Evaluated For Impairment532false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse465false USDtruefalse$c771_From1Jan2012To30Jun2012_AllOtherRealEstateMember_ImpairedLoansWithAnAllowanceRecordedMember_InterestIncomeRecognizedMemberhttp://www.sec.gov/CIK0001129920duration2012-01-01T00:00:002012-06-30T00:00:00falsefalseInterest Income Recognized (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_InterestIncomeRecognizedMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseAll Other Real Estate [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AllOtherRealEstateMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With An Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithAnAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Interest Income Recognized (Member) | All Other Real Estate [Member] | Impaired Loans With An Allowance Recorded (Member)533true 5misn_InterestIncomeRecognizedOnImpairedLoansAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Interest Income Recognized on Impaired Loans:534false 6us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeAccrualMethodus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of interest income, recognized on accrual basis, on financing receivables, for which there is a related allowance for credit losses and are recognized as impaired.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 false2Impaired Loans With An Allowance Recorded535false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse467false USDtruefalse$c777_From1Jan2012To30Jun2012_AllOtherRealEstateMember_ImpairedLoansWithNoAllowanceRecordedMember_InterestIncomeRecognizedMemberhttp://www.sec.gov/CIK0001129920duration2012-01-01T00:00:002012-06-30T00:00:00falsefalseInterest Income Recognized (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_InterestIncomeRecognizedMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseAll Other Real Estate [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AllOtherRealEstateMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With No Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithNoAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Interest Income Recognized (Member) | All Other Real Estate [Member] | Impaired Loans With No Allowance Recorded (Member)536true 5misn_InterestIncomeRecognizedOnImpairedLoansAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Interest Income Recognized on Impaired Loans:537false 6us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceInterestIncomeAccrualMethodus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of interest income, recognized on accrual basis, on financing receivables that are recognized as impaired, for which there is no related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 false2Impaired Loans With No Allowance Recorded538false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse469false USDtruefalse$c781_From1Jan2012To30Jun2012_AllOtherRealEstateMember_IndividuallyEvaluatedForImpairmentMember_InterestIncomeRecognizedMemberhttp://www.sec.gov/CIK0001129920duration2012-01-01T00:00:002012-06-30T00:00:00falsefalseInterest Income Recognized (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_InterestIncomeRecognizedMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseAll Other Real Estate [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_AllOtherRealEstateMembermisn_LoansAxisexplicitMemberfalsefalseIndividually Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_IndividuallyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Interest Income Recognized (Member) | All Other Real Estate [Member] | Individually Evaluated for Impairment [Member]539true 5misn_InterestIncomeRecognizedOnImpairedLoansAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Interest Income Recognized on Impaired Loans:540false 6us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethodus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 false2Total Loans Individually Evaluated For Impairment541false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse471false USDtruefalse$c772_From1Jan2012To30Jun2012_CommericalAndIndustrialMember_ImpairedLoansWithAnAllowanceRecordedMember_InterestIncomeRecognizedMemberhttp://www.sec.gov/CIK0001129920duration2012-01-01T00:00:002012-06-30T00:00:00falsefalseInterest Income Recognized (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_InterestIncomeRecognizedMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseCommerical and Industrial [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_CommericalAndIndustrialMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With An Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithAnAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Interest Income Recognized (Member) | Commerical and Industrial [Member] | Impaired Loans With An Allowance Recorded (Member)542true 5misn_InterestIncomeRecognizedOnImpairedLoansAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Interest Income Recognized on Impaired Loans:543false 6us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeAccrualMethodus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of interest income, recognized on accrual basis, on financing receivables, for which there is a related allowance for credit losses and are recognized as impaired.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 false2Impaired Loans With An Allowance Recorded544false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse473false USDtruefalse$c600_From1Jan2012To31Dec2012_CommericalAndIndustrialMember_ImpairedLoansWithNoAllowanceRecordedMember_InterestIncomeRecognizedMemberhttp://www.sec.gov/CIK0001129920duration2012-01-01T00:00:002012-12-31T00:00:00falsefalseInterest Income Recognized (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_InterestIncomeRecognizedMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseCommerical and Industrial [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_CommericalAndIndustrialMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With No Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithNoAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Interest Income Recognized (Member) | Commerical and Industrial [Member] | Impaired Loans With No Allowance Recorded (Member)545true 5misn_InterestIncomeRecognizedOnImpairedLoansAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Interest Income Recognized on Impaired Loans:546false 6us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceInterestIncomeAccrualMethodus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of interest income, recognized on accrual basis, on financing receivables that are recognized as impaired, for which there is no related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 false2Impaired Loans With No Allowance Recorded547false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse474false USDtruefalse$c608_From1Jan2012To31Dec2012_CommericalAndIndustrialMember_IndividuallyEvaluatedForImpairmentMember_InterestIncomeRecognizedMemberhttp://www.sec.gov/CIK0001129920duration2012-01-01T00:00:002012-12-31T00:00:00falsefalseInterest Income Recognized (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_InterestIncomeRecognizedMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseCommerical and Industrial [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_CommericalAndIndustrialMembermisn_LoansAxisexplicitMemberfalsefalseIndividually Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_IndividuallyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Interest Income Recognized (Member) | Commerical and Industrial [Member] | Individually Evaluated for Impairment [Member]548true 5misn_InterestIncomeRecognizedOnImpairedLoansAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Interest Income Recognized on Impaired Loans:549false 6us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethodus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 false2Total Loans Individually Evaluated For Impairment550false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse475false USDtruefalse$c773_From1Jan2012To30Jun2012_ConsumerAndAllOtherLoansAndLeasesMember_ImpairedLoansWithAnAllowanceRecordedMember_InterestIncomeRecognizedMemberhttp://www.sec.gov/CIK0001129920duration2012-01-01T00:00:002012-06-30T00:00:00falsefalseInterest Income Recognized (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_InterestIncomeRecognizedMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseConsumer and All Other Loans and Leases [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ConsumerAndAllOtherLoansAndLeasesMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With An Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithAnAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Interest Income Recognized (Member) | Consumer and All Other Loans and Leases [Member] | Impaired Loans With An Allowance Recorded (Member)551true 5misn_InterestIncomeRecognizedOnImpairedLoansAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Interest Income Recognized on Impaired Loans:552false 6us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeAccrualMethodus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of interest income, recognized on accrual basis, on financing receivables, for which there is a related allowance for credit losses and are recognized as impaired.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 false2Impaired Loans With An Allowance Recorded553false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse477false USDtruefalse$c778_From1Jan2012To30Jun2012_ConsumerAndAllOtherLoansAndLeasesMember_ImpairedLoansWithNoAllowanceRecordedMember_InterestIncomeRecognizedMemberhttp://www.sec.gov/CIK0001129920duration2012-01-01T00:00:002012-06-30T00:00:00falsefalseInterest Income Recognized (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_InterestIncomeRecognizedMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseConsumer and All Other Loans and Leases [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ConsumerAndAllOtherLoansAndLeasesMembermisn_LoansAxisexplicitMemberfalsefalseImpaired Loans With No Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithNoAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Interest Income Recognized (Member) | Consumer and All Other Loans and Leases [Member] | Impaired Loans With No Allowance Recorded (Member)554true 5misn_InterestIncomeRecognizedOnImpairedLoansAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Interest Income Recognized on Impaired Loans:555false 6us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceInterestIncomeAccrualMethodus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of interest income, recognized on accrual basis, on financing receivables that are recognized as impaired, for which there is no related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 false2Impaired Loans With No Allowance Recorded556false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse479false USDtruefalse$c782_From1Jan2012To30Jun2012_ConsumerAndAllOtherLoansAndLeasesMember_IndividuallyEvaluatedForImpairmentMember_InterestIncomeRecognizedMemberhttp://www.sec.gov/CIK0001129920duration2012-01-01T00:00:002012-06-30T00:00:00falsefalseInterest Income Recognized (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_InterestIncomeRecognizedMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseConsumer and All Other Loans and Leases [Member]misn_LoansAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ConsumerAndAllOtherLoansAndLeasesMembermisn_LoansAxisexplicitMemberfalsefalseIndividually Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_IndividuallyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Interest Income Recognized (Member) | Consumer and All Other Loans and Leases [Member] | Individually Evaluated for Impairment [Member]557true 5misn_InterestIncomeRecognizedOnImpairedLoansAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Interest Income Recognized on Impaired Loans:558false 6us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethodus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse00USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 false2Total Loans Individually Evaluated For Impairment559false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse481false USDtruefalse$c428_From1Jan2013To30Jun2013_ImpairedLoansWithAnAllowanceRecordedMember_InterestIncomeRecognizedMemberhttp://www.sec.gov/CIK0001129920duration2013-01-01T00:00:002013-06-30T00:00:00falsefalseInterest Income Recognized (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_InterestIncomeRecognizedMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseImpaired Loans With An Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithAnAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Interest Income Recognized (Member) | Impaired Loans With An Allowance Recorded (Member)560true 5misn_InterestIncomeRecognizedOnImpairedLoansAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Interest Income Recognized on Impaired Loans:561false 6us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeAccrualMethodus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse1900019USD$falsefalsefalse2truefalsefalse00USD$falsefalsefalse3truefalsefalse1000010USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of interest income, recognized on accrual basis, on financing receivables, for which there is a related allowance for credit losses and are recognized as impaired.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 false2Impaired Loans With An Allowance Recorded562false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse484false USDtruefalse$c430_From1Jan2013To30Jun2013_ImpairedLoansWithNoAllowanceRecordedMember_InterestIncomeRecognizedMemberhttp://www.sec.gov/CIK0001129920duration2013-01-01T00:00:002013-06-30T00:00:00falsefalseInterest Income Recognized (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_InterestIncomeRecognizedMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseImpaired Loans With No Allowance Recorded (Member)us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_ImpairedLoansWithNoAllowanceRecordedMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Interest Income Recognized (Member) | Impaired Loans With No Allowance Recorded (Member)563true 5misn_InterestIncomeRecognizedOnImpairedLoansAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Interest Income Recognized on Impaired Loans:564false 6us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceInterestIncomeAccrualMethodus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse10001USD$falsefalsefalse2falsefalsefalse00falsefalsefalse3truefalsefalse10001USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of interest income, recognized on accrual basis, on financing receivables that are recognized as impaired, for which there is no related allowance for credit losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 false2Impaired Loans With No Allowance Recorded565false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse486false USDtruefalse$c433_From1Jan2013To30Jun2013_IndividuallyEvaluatedForImpairmentMember_InterestIncomeRecognizedMemberhttp://www.sec.gov/CIK0001129920duration2013-01-01T00:00:002013-06-30T00:00:00falsefalseInterest Income Recognized (Member)us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisxbrldihttp://xbrl.org/2006/xbrldimisn_InterestIncomeRecognizedMemberus-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxisexplicitMemberfalsefalseIndividually Evaluated for Impairment [Member]us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisxbrldihttp://xbrl.org/2006/xbrldimisn_IndividuallyEvaluatedForImpairmentMemberus-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Interest Income Recognized (Member) | Individually Evaluated for Impairment [Member]566true 5misn_InterestIncomeRecognizedOnImpairedLoansAbstractmisn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Interest Income Recognized on Impaired Loans:567false 6us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethodus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse2000020USD$falsetruefalse2falsefalsefalse00falsefalsefalse3truefalsefalse1100011USD$falsetruefalsexbrli:monetaryItemTypemonetaryAmount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 false2Total Loans Individually Evaluated For ImpairmentfalseNote 5 - Credit Quality and the Allowance for Loan and Lease Losses (Details) - Impaired Loans (USD $)ThousandsUnKnownUnKnownUnKnowntruefalsefalseSheethttp://www.missioncommunitybank.com/role/ImpairedLoansTable3567