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Note 3 - Loans/Leases Receivable (Details) - Troubled Debt Restructurings (USD $) | 3 Months Ended
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Mar. 31, 2014
Significant Payment Delay [Member] | Finance Leases Portfolio Segment [Member] |
Financing Receivable, Modifications [Line Items] |
Troubled debt restructurings, number of loans/leases | 1 us-gaap_FinancingReceivableModificationsNumberOfContracts2 / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = qcrh_SignificantPaymentDelayMember
Troubled debt restructurings, pre-modification recorded investment | $ 89,443 us-gaap_FinancingReceivableModificationsPreModificationRecordedInvestment2 / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = qcrh_SignificantPaymentDelayMember
Troubled debt restructurings, post-modification recorded investment | 89,443 us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = qcrh_SignificantPaymentDelayMember
Significant Payment Delay [Member] |
Financing Receivable, Modifications [Line Items] |
Troubled debt restructurings, number of loans/leases | 1 us-gaap_FinancingReceivableModificationsNumberOfContracts2 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = qcrh_SignificantPaymentDelayMember
Troubled debt restructurings, pre-modification recorded investment | 89,443 us-gaap_FinancingReceivableModificationsPreModificationRecordedInvestment2 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = qcrh_SignificantPaymentDelayMember
Troubled debt restructurings, post-modification recorded investment | 89,443 us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = qcrh_SignificantPaymentDelayMember
Extension of Maturity [Member] | Finance Leases Portfolio Segment [Member] |
Financing Receivable, Modifications [Line Items] |
Troubled debt restructurings, number of loans/leases | 1 us-gaap_FinancingReceivableModificationsNumberOfContracts2 / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = qcrh_ExtensionOfMaturityMember
Troubled debt restructurings, pre-modification recorded investment | 70,144 us-gaap_FinancingReceivableModificationsPreModificationRecordedInvestment2 / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = qcrh_ExtensionOfMaturityMember
Troubled debt restructurings, post-modification recorded investment | 70,144 us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = qcrh_ExtensionOfMaturityMember
Troubled debt restructurings, specific allowance | 24,246 qcrh_FinancingReceivableModificationsSpecificAllowanceRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = qcrh_ExtensionOfMaturityMember
Extension of Maturity [Member] |
Financing Receivable, Modifications [Line Items] |
Troubled debt restructurings, number of loans/leases | 1 us-gaap_FinancingReceivableModificationsNumberOfContracts2 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = qcrh_ExtensionOfMaturityMember
Troubled debt restructurings, pre-modification recorded investment | 70,144 us-gaap_FinancingReceivableModificationsPreModificationRecordedInvestment2 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = qcrh_ExtensionOfMaturityMember
Troubled debt restructurings, post-modification recorded investment | 70,144 us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = qcrh_ExtensionOfMaturityMember
Troubled debt restructurings, specific allowance | 24,246 qcrh_FinancingReceivableModificationsSpecificAllowanceRecordedInvestment / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = qcrh_ExtensionOfMaturityMember
Troubled Debt Restructurings [Member] |
Financing Receivable, Modifications [Line Items] |
Troubled debt restructurings, number of loans/leases | 2 us-gaap_FinancingReceivableModificationsNumberOfContracts2 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = qcrh_TroubledDebtRestructuringsMember
Troubled debt restructurings, pre-modification recorded investment | 159,587 us-gaap_FinancingReceivableModificationsPreModificationRecordedInvestment2 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = qcrh_TroubledDebtRestructuringsMember
Troubled debt restructurings, post-modification recorded investment | 159,587 us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = qcrh_TroubledDebtRestructuringsMember
Troubled debt restructurings, specific allowance | $ 24,246 qcrh_FinancingReceivableModificationsSpecificAllowanceRecordedInvestment / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = qcrh_TroubledDebtRestructuringsMember

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- Definition Specific allowance of amount of investment in financing receivables modified by troubled debt restructurings. + References No definition available. + Details
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Namespace Prefix: | qcrh_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Number of financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953676-111524 + Details
Name: | us-gaap_FinancingReceivableModificationsNumberOfContracts2
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Post-modification amount of investment in financing receivables modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953676-111524 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Pre-modification amount of investment in financing receivables modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953676-111524 + Details
Name: | us-gaap_FinancingReceivableModificationsPreModificationRecordedInvestment2
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableTroubledDebtRestructuringAxis=qcrh_SignificantPaymentDelayMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableTroubledDebtRestructuringAxis=qcrh_TroubledDebtRestructuringsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |