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Note 21 - Fair Value - Quantitative Information About Level Fair Value Measurements (Details) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) item | Dec. 31, 2017 USD ($)
--- | --- | --- | ---
Fair value |  | $ 19,784,866 | $ 23,615,310
Amount of fair value assets transfered from Level 1 to Level 2 |  | 0 | 0
Amount of fair value assets transfered from Level 2 to Level 1 | $ 0 | 0 |
Amount of fair value liabilities transfered from Level 1 to Level 2 |  | 0 | 0
Amount of fair value liabilities transfered from Level 2 to Level 1 |  | 0 | 0
Impaired Loans Leases [Member] |  |  |
Fair value |  | $ 9,656,912 | 8,972,337
Valuation technique |  | qcrh:ValuationTechniqueAppraisalOfCollateralMember |
Unobservable input |  | us-gaap:MeasurementInputAppraisedValueMember |
Impaired Loans Leases [Member] | Minimum |  |  |
Impaired loans/leases, measurement input | item |  | (10.00) |
Impaired Loans Leases [Member] | Maximum |  |  |
Impaired loans/leases, measurement input | item |  | (30.00) |
Other Securities |  |  |
Fair value |  | $ 10,127,954 | 14,642,973
Valuation technique |  | qcrh:ValuationTechniqueAppraisalOfCollateralMember |
Unobservable input |  | us-gaap:MeasurementInputAppraisedValueMember |
Other Securities | Minimum |  |  |
OREO, measurement input | item |  | 0.00 |
Other Securities | Maximum |  |  |
OREO, measurement input | item |  | (35.00) |
Other Real Estate Owned [Member] |  |  |
Fair value |  | $ 10,127,954 | 14,642,973
Fair Value, Inputs, Level 3 [Member] |  |  |
Fair value |  | 19,784,866 | 23,615,310
Fair Value, Inputs, Level 3 [Member] | Impaired Loans Leases [Member] |  |  |
Fair value |  | 9,656,912 | 8,972,337
Fair Value, Inputs, Level 3 [Member] | Other Real Estate Owned [Member] |  |  |
Fair value |  | $ 10,127,954 | $ 14,642,973

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- Definition Indicates measurement input for alternative investment. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb)(1) -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 31 -URI http://asc.fasb.org/extlink&oid=75031198&loc=d3e14210-108612 + Details
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- Definition Amount of transfers of assets measured on a recurring basis out of Level 1 of the fair value hierarchy into Level 2. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bb) -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258 + Details
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- Definition Value of input used to measure real estate owned by financial institution by financial institution which is not directly related to its business. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258 + Details
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