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Note 1 - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) | Sep. 30, 2025 subsidiary
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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES |
Number of subsidiaries commercial banks | 4

X
- Definition Represents the number of subsidiaries. + References No definition available. + Details
Name: | qcrh_NumberOfSubsidiaries
Namespace Prefix: | qcrh_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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- References No definition available. + Details
Name: | us-gaap_AccountingPoliciesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration