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Note 11 - Junior Subordinate Debentures (Details) - Trust Preferred Securities (Trust Preferred Securities [Member], USD $) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2014 | Dec. 31, 2013
Investments in and Advances to Affiliates [Line Items] |  |
Amount Issued (in Dollars) | $ 42,787,000 us-gaap_DebtInstrumentFaceAmount |
Interest rate | 2.50%us-gaap_DebtInstrumentInterestRateEffectivePercentage | 2.51%us-gaap_DebtInstrumentInterestRateEffectivePercentage
London Interbank Offered Rate (LIBOR) [Member] | QCR Holdings Statutory Trust II [Member] |  |
Investments in and Advances to Affiliates [Line Items] |  |
Interest rate description | 2.85%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / invest_InvestmentAxis = qcrh_TrustPreferredSecuritiesMember / dei_LegalEntityAxis = qcrh_QCRHoldingsStatutoryTrustIIMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember |
London Interbank Offered Rate (LIBOR) [Member] | QCR Holdings Statutory Trust III [Member] |  |
Investments in and Advances to Affiliates [Line Items] |  |
Interest rate description | 2.85%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / invest_InvestmentAxis = qcrh_TrustPreferredSecuritiesMember / dei_LegalEntityAxis = qcrh_QCRHoldingsStatutoryTrustIIIMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember |
London Interbank Offered Rate (LIBOR) [Member] | QCR Holdings Statutory Trust IV [Member] |  |
Investments in and Advances to Affiliates [Line Items] |  |
Interest rate description | 1.80%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / invest_InvestmentAxis = qcrh_TrustPreferredSecuritiesMember / dei_LegalEntityAxis = qcrh_QCRHoldingsStatutoryTrustIVMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember |
London Interbank Offered Rate (LIBOR) [Member] | QCR Holdings Statutory Trust V [Member] |  |
Investments in and Advances to Affiliates [Line Items] |  |
Interest rate description | 1.55%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / invest_InvestmentAxis = qcrh_TrustPreferredSecuritiesMember / dei_LegalEntityAxis = qcrh_QCRHoldingsStatutoryTrustVMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember |
London Interbank Offered Rate (LIBOR) [Member] | Community National Trust II [Member] |  |
Investments in and Advances to Affiliates [Line Items] |  |
Interest rate description | 2.17%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / invest_InvestmentAxis = qcrh_TrustPreferredSecuritiesMember / dei_LegalEntityAxis = qcrh_CommunityNationalTrustIIMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember |
London Interbank Offered Rate (LIBOR) [Member] | Community National Trust III [Member] |  |
Investments in and Advances to Affiliates [Line Items] |  |
Interest rate description | 1.75%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / invest_InvestmentAxis = qcrh_TrustPreferredSecuritiesMember / dei_LegalEntityAxis = qcrh_CommunityNationalTrustIIIMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember |
QCR Holdings Statutory Trust II [Member] |  |
Investments in and Advances to Affiliates [Line Items] |  |
Date issued | February 2004 |
Amount Issued (in Dollars) | 12,372,000 us-gaap_DebtInstrumentFaceAmount / invest_InvestmentAxis = qcrh_TrustPreferredSecuritiesMember / dei_LegalEntityAxis = qcrh_QCRHoldingsStatutoryTrustIIMember |
Interest rate | 3.08%us-gaap_DebtInstrumentInterestRateEffectivePercentage / invest_InvestmentAxis = qcrh_TrustPreferredSecuritiesMember / dei_LegalEntityAxis = qcrh_QCRHoldingsStatutoryTrustIIMember | 3.10%us-gaap_DebtInstrumentInterestRateEffectivePercentage / invest_InvestmentAxis = qcrh_TrustPreferredSecuritiesMember / dei_LegalEntityAxis = qcrh_QCRHoldingsStatutoryTrustIIMember
QCR Holdings Statutory Trust III [Member] |  |
Investments in and Advances to Affiliates [Line Items] |  |
Date issued | February 2004 |
Amount Issued (in Dollars) | 8,248,000 us-gaap_DebtInstrumentFaceAmount / invest_InvestmentAxis = qcrh_TrustPreferredSecuritiesMember / dei_LegalEntityAxis = qcrh_QCRHoldingsStatutoryTrustIIIMember |
Interest rate | 3.08%us-gaap_DebtInstrumentInterestRateEffectivePercentage / invest_InvestmentAxis = qcrh_TrustPreferredSecuritiesMember / dei_LegalEntityAxis = qcrh_QCRHoldingsStatutoryTrustIIIMember | 3.10%us-gaap_DebtInstrumentInterestRateEffectivePercentage / invest_InvestmentAxis = qcrh_TrustPreferredSecuritiesMember / dei_LegalEntityAxis = qcrh_QCRHoldingsStatutoryTrustIIIMember
QCR Holdings Statutory Trust IV [Member] |  |
Investments in and Advances to Affiliates [Line Items] |  |
Date issued | May 2005 |
Amount Issued (in Dollars) | 5,155,000 us-gaap_DebtInstrumentFaceAmount / invest_InvestmentAxis = qcrh_TrustPreferredSecuritiesMember / dei_LegalEntityAxis = qcrh_QCRHoldingsStatutoryTrustIVMember |
Interest rate | 2.03%us-gaap_DebtInstrumentInterestRateEffectivePercentage / invest_InvestmentAxis = qcrh_TrustPreferredSecuritiesMember / dei_LegalEntityAxis = qcrh_QCRHoldingsStatutoryTrustIVMember | 2.04%us-gaap_DebtInstrumentInterestRateEffectivePercentage / invest_InvestmentAxis = qcrh_TrustPreferredSecuritiesMember / dei_LegalEntityAxis = qcrh_QCRHoldingsStatutoryTrustIVMember
QCR Holdings Statutory Trust V [Member] |  |
Investments in and Advances to Affiliates [Line Items] |  |
Date issued | February 2006 |
Amount Issued (in Dollars) | 10,310,000 us-gaap_DebtInstrumentFaceAmount / invest_InvestmentAxis = qcrh_TrustPreferredSecuritiesMember / dei_LegalEntityAxis = qcrh_QCRHoldingsStatutoryTrustVMember |
Interest rate | 1.78%us-gaap_DebtInstrumentInterestRateEffectivePercentage / invest_InvestmentAxis = qcrh_TrustPreferredSecuritiesMember / dei_LegalEntityAxis = qcrh_QCRHoldingsStatutoryTrustVMember | 1.79%us-gaap_DebtInstrumentInterestRateEffectivePercentage / invest_InvestmentAxis = qcrh_TrustPreferredSecuritiesMember / dei_LegalEntityAxis = qcrh_QCRHoldingsStatutoryTrustVMember
Community National Trust II [Member] |  |
Investments in and Advances to Affiliates [Line Items] |  |
Date issued | September 2004 |
Amount Issued (in Dollars) | 3,093,000 us-gaap_DebtInstrumentFaceAmount / invest_InvestmentAxis = qcrh_TrustPreferredSecuritiesMember / dei_LegalEntityAxis = qcrh_CommunityNationalTrustIIMember |
Interest rate | 2.42%us-gaap_DebtInstrumentInterestRateEffectivePercentage / invest_InvestmentAxis = qcrh_TrustPreferredSecuritiesMember / dei_LegalEntityAxis = qcrh_CommunityNationalTrustIIMember | 2.42%us-gaap_DebtInstrumentInterestRateEffectivePercentage / invest_InvestmentAxis = qcrh_TrustPreferredSecuritiesMember / dei_LegalEntityAxis = qcrh_CommunityNationalTrustIIMember
Community National Trust III [Member] |  |
Investments in and Advances to Affiliates [Line Items] |  |
Date issued | March 2007 |
Amount Issued (in Dollars) | $ 3,609,000 us-gaap_DebtInstrumentFaceAmount / invest_InvestmentAxis = qcrh_TrustPreferredSecuritiesMember / dei_LegalEntityAxis = qcrh_CommunityNationalTrustIIIMember |
Interest rate | 1.99%us-gaap_DebtInstrumentInterestRateEffectivePercentage / invest_InvestmentAxis = qcrh_TrustPreferredSecuritiesMember / dei_LegalEntityAxis = qcrh_CommunityNationalTrustIIIMember | 1.99%us-gaap_DebtInstrumentInterestRateEffectivePercentage / invest_InvestmentAxis = qcrh_TrustPreferredSecuritiesMember / dei_LegalEntityAxis = qcrh_CommunityNationalTrustIIIMember

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- Definition Trust preferred securities date issued. + References No definition available. + Details
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- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
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- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400 + Details
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- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Details
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