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Note 3 - LOANS/LEASES RECEIVABLE - Changes in the ACL for OBS exposures (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Balance, beginning	$ 84,470	$ 86,573	$ 87,200	$ 87,706
Provisions to expense	4,343	3,313	8,079	5,771
Balance, ending	87,706	85,797	87,706	85,797
Unfunded Loan Commitment
Balance, beginning	9,207	6,033	9,529	5,552
Provisions to expense	1,153	293	831	774
Balance, ending	$ 10,360	$ 6,326	$ 10,360	$ 6,326

X

- Definition

Amount includes investment in lease, excluding accrued interest, of allowance for credit loss on financing receivable.

+ References

No definition available.

+ Details

Name:	qcrh_FinancingReceivableAndNetInvestmentInLeaseAllowanceForCreditLossExcludingAccruedInterest
Namespace Prefix:	qcrh_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount, excluding accrued interest, of credit loss expense (reversal of expense) on financing receivable and net investment in lease.

+ References

No definition available.

+ Details

Name:	qcrh_FinancingReceivableAndNetInvestmentInLeaseExcludingAccruedInterestCreditLossExpenseReversal
Namespace Prefix:	qcrh_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_UnfundedLoanCommitmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: