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Note 11 - COMMITMENTS (Details) $ in Millions | 9 Months Ended
--- | ---
Sep. 30, 2024 USD ($)
CBRT facility |
Long-Term Purchase Commitment [Line Items] |
Contract price for construction of new facility | $ 17.0
Construction payment for new facility | 12.6
Construction remaining future commitment | 4.4
CSB facility |
Long-Term Purchase Commitment [Line Items] |
Contract price for construction of new facility | 41.3
Construction payment for new facility | 2.1
Construction remaining future commitment | $ 39.2

X
- Definition The amount of contract price that was paid. + References No definition available. + Details
Name: | qcrh_ConstructionCommitmentPaymentMade
Namespace Prefix: | qcrh_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of contract price remaining for future payment consisting of work plus fee payable under construction commitment. + References No definition available. + Details
Name: | qcrh_ConstructionCommitmentRemainingFutureCommitment
Namespace Prefix: | qcrh_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The minimum amount the entity agreed to spend under the long-term purchase commitment. + References No definition available. + Details
Name: | us-gaap_LongTermPurchaseCommitmentAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_LongTermPurchaseCommitmentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis=qcrh_CrbtFacilityCedarRapidsIowaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis=qcrh_CsbFacilityInAnkenyIowaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |