The number of junior subordinated debentures assumed.

No definition available.

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Period Type:	instant

- Definition

Amount of long-term debt due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=116869197&loc=d3e4845-128472

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
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Balance Type:	credit
Period Type:	instant

- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 6
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6036836-161870

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-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
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-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Balance Type:	na
Period Type:	instant

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Period Type:	duration

- Details

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Period Type:

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

- Details

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- Details

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Note 13 - Junior Subordinated Debentures (Details)			12 Months Ended
Note 13 - Junior Subordinated Debentures (Details)	Feb. 12, 2019	Sep. 27, 2017 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Oct. 01, 2017 USD ($) loan	Feb. 29, 2004 USD ($)
Other borrowings					$ 3,857,000
Debt Instrument, Face Amount			$ 40,210,000	$ 40,210,000
Debt Instrument, Interest Rate, Effective Percentage			4.18%	4.94%
London Interbank Offered Rate (LIBOR)
Basis points	282.00%
Junior Subordinated Debt [Member]
Repayment period (in years)			30 years
Note Payable to QCR Holdings Capital Trust II [Member]
Debt Instrument, Face Amount							$ 12,372,000
Guaranty Bank and Trust Company [Member]
Number of assumed junior subordinated debentures \| loan						1
Other borrowings						$ 3,857,000
Debt Instrument, Face Amount		$ 7,000,000
Repayment period (in years)		4 years