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Note 1 - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)	Mar. 31, 2025 subsidiary
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Number of subsidiaries commercial banks	4

X

- Definition

Represents the number of subsidiaries.

+ References

No definition available.

+ Details

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Namespace Prefix:	qcrh_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration