Represents FHLB collateral maintenance levels.

No definition available.

Name:	qcrh_FHLBCollateralMaintenanceLevels
Namespace Prefix:	qcrh_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The amount of gain or loss on prepayment of FHLB advances.

+ References

No definition available.

+ Details

Name:	qcrh_GainLossOnPrepaymentOfFederalHomeLoanAdvances
Namespace Prefix:	qcrh_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Represents information pertaining to prepaid Federal Home Loan Bank advances.

+ References

No definition available.

+ Details

Name:	qcrh_PrepaidFederalHomeLoanBankAdvances
Namespace Prefix:	qcrh_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of the collateral pledged in support of federal home loan bank advances outstanding.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph (d)
-URI https://asc.fasb.org/extlink&oid=123599511&loc=d3e64711-112823

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 45
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=6479118&loc=d3e64650-112822

+ Details

Name:	us-gaap_FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresCollateralPledged1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Maturity period on fixed rate advances made and reported by Federal Home Loan Bank (FHLBank), in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_FederalHomeLoanBankAdvancesMaturityPeriodFixedRate
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Federal Home Loan Bank (FHLB) stock represents an equity interest in a FHLB. It does not have a readily determinable fair value because its ownership is restricted and it lacks a market (liquidity).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 325
-Section 45
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=123599499&loc=d3e63345-112809

+ Details

Name:	us-gaap_FederalHomeLoanBankStock
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FairValueByAssetClassAxis=us-gaap_LoansReceivableMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PledgedStatusAxis=qcrh_CollateralLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PledgedStatusAxis=qcrh_CollateralSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Note 10 - FHLB Advances (Details) - USD ($) $ in Thousands	12 Months Ended
Note 10 - FHLB Advances (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2020	Dec. 31, 2021
FHLB stock	$ 25,600		$ 7,800
Prepaid FHLB advances		$ 55,300
Loss on prepayment of FHLB advances		$ 1,900
Minimum
FHLB advances maturity period	1 day
Minimum \| Loans Receivable [Member]
FHLB collateral maintenance levels	125.00%
Maximum
FHLB advances maturity period	14 days
Maximum \| Loans Receivable [Member]
FHLB collateral maintenance levels	333.00%
Collateral, Loans [Member]
FHLB advance	$ 1,700,000		1,300,000
Collateral, Securities [Member]
FHLB advance	$ 290		$ 334