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Note 6 - Fair Value (Details) - Quantitative Information About Level Fair Value Measurements (USD $) | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2014 | Dec. 31, 2013
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Fair value | $ 25,150,866 | $ 19,516,934
Impaired Loans/Leases [Member] | Minimum [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Range | 10.00% | 10.00%
Impaired Loans/Leases [Member] | Maximum [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Range | 50.00% | 50.00%
Impaired Loans/Leases [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Fair value | 13,616,631 | 9,009,557
Valuation technique | Appraisal of collateral | Appraisal of collateral
Other Real Estate Owned [Member] | Minimum [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Range | 0.00% | 0.00%
Other Real Estate Owned [Member] | Maximum [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Range | 35.00% | 35.00%
Other Real Estate Owned [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Fair value | $ 11,534,235 | $ 10,507,377
Valuation technique | Appraisal of collateral | Appraisal of collateral

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- Definition The appraisal range for the fair value of assets measured on a non recurring basis. + References No definition available. + Details
Name: | qcrh_AppraisalRange
Namespace Prefix: | qcrh_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value on a nonrecurring basis by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. + References No definition available. + Details
Name: | us-gaap_AssetsFairValueDisclosureNonrecurring
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

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- Definition Description of the inputs and valuation technique(s) used to measure fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueMeasurementsValuationTechniques
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration