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Note 18 - Commitments and Contingencies (Details) (USD $) | 1 Months Ended |  |
--- | --- | --- | ---
Apr. 30, 2011 | Dec. 31, 2013 | Dec. 31, 2014 | May 13, 2013
Note 18 - Commitments and Contingencies (Details) [Line Items] |  |  |  |
Disposal Group, Including Discontinued Operation, Mortgage Loans |  | $ 1,358,290 us-gaap_LoansHeldForSaleMortgages | $ 553,000 us-gaap_LoansHeldForSaleMortgages |
Loans Sold with Recourse Provisions |  | 16,151,133 qcrh_LoansSoldWithRecourseProvisions | 9,049,519 qcrh_LoansSoldWithRecourseProvisions |
Cash, Uninsured Amount |  | 54,163,895 us-gaap_CashUninsuredAmount | 101,602,829 us-gaap_CashUninsuredAmount |
Money Market Funds, at Carrying Value |  | 78,880,300 us-gaap_MoneyMarketFundsAtCarryingValue | 89,006,285 us-gaap_MoneyMarketFundsAtCarryingValue |
Commitments to Extend Credit [Member] |  |  |  |
Note 18 - Commitments and Contingencies (Details) [Line Items] |  |  |  |
Other Commitment |  | 432,601,000 us-gaap_OtherCommitment / us-gaap_FinancialInstrumentAxis = us-gaap_CommitmentsToExtendCreditMember | 499,267,717 us-gaap_OtherCommitment / us-gaap_FinancialInstrumentAxis = us-gaap_CommitmentsToExtendCreditMember |
Unjust Enrichment Case [Member] | Community National Bancorporation and Community National Bank [Member] |  |  |  |
Note 18 - Commitments and Contingencies (Details) [Line Items] |  |  |  |
Business Combination, Contingent Consideration, Liability |  |  |  | 1,028,000 us-gaap_BusinessCombinationContingentConsiderationLiability / us-gaap_BusinessAcquisitionAxis = qcrh_CommunityNationalBancorporationAndCommunityNationalBankMember / us-gaap_LitigationCaseAxis = qcrh_UnjustEnrichmentCaseMember
Unjust Enrichment Case [Member] | Community National Bancorporation and Community National Bank [Member] |  |  |  |
Note 18 - Commitments and Contingencies (Details) [Line Items] |  |  |  |
Loss Contingency, Number of Defendants | 1 us-gaap_LossContingencyNumberOfDefendants / dei_LegalEntityAxis = qcrh_CommunityNationalBancorporationAndCommunityNationalBankMember / us-gaap_LitigationCaseAxis = qcrh_UnjustEnrichmentCaseMember |  |  |
Unjust Enrichment Case [Member] |  |  |  |
Note 18 - Commitments and Contingencies (Details) [Line Items] |  |  |  |
Loss Contingency, Number of Defendants | 36 us-gaap_LossContingencyNumberOfDefendants / us-gaap_LitigationCaseAxis = qcrh_UnjustEnrichmentCaseMember |  |  |
Litigation Settlement, Amount |  | 940,333 us-gaap_LitigationSettlementAmount / us-gaap_LitigationCaseAxis = qcrh_UnjustEnrichmentCaseMember |  |
Standby Letters of Credit [Member] |  |  |  |
Note 18 - Commitments and Contingencies (Details) [Line Items] |  |  |  |
Other Commitment |  | $ 9,697,000 us-gaap_OtherCommitment / us-gaap_CreditFacilityAxis = us-gaap_StandbyLettersOfCreditMember | $ 12,896,428 us-gaap_OtherCommitment / us-gaap_CreditFacilityAxis = us-gaap_StandbyLettersOfCreditMember |

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- Definition Loans sold with recourse provisions. + References No definition available. + Details
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- Definition Amount of liability recognized arising from contingent consideration in a business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 25 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6408-128476 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 35 -Paragraph 1 -Subparagraph b -URI http://asc.fasb.org/extlink&oid=6911338&loc=d3e6819-128478 + Details
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- Definition The amount of cash as of the balance sheet date that is not insured by the Federal Deposit Insurance Corporation. + References No definition available. + Details
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- Definition Amount of judgment or settlement awarded to (against) the entity in respect of litigation. + References No definition available. + Details
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- Definition Amount classified as mortgage loans attributable to disposal group held for sale or disposed of. Excludes loans and leases covered under loss sharing agreements and loans classified as debt securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4428-111522 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7(a)(3)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 310 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6490309&loc=d3e48678-111004 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Permanent Investor -URI http://asc.fasb.org/extlink&oid=6520390 + Details
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- Definition Investment in short-term money-market instruments (such as commercial paper, banker's acceptances, repurchase agreements, government securities, certificates of deposit, and so forth) which are highly liquid (that is, readily convertible to known amounts of cash) and so near their maturity that they present an insignificant risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify as cash equivalents by definition. Original maturity means an original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash Equivalents -URI http://asc.fasb.org/extlink&oid=6507016 + Details
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- Definition Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions. + References No definition available. + Details
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