Note 14 - Employee Benefit Plans (Details) - Deferred Compensation Agreements (USD $)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Deferred Compensation Agreements [Abstract]
Balance, beginning	$ 6,224,368	$ 5,151,630	$ 4,202,733
Balance, ending	7,503,692	6,224,368	5,151,630
Company expense	661,611	557,663	555,407
Employee deferrals	628,589	525,469	405,788
Cash payments made	$ (10,876)	$ (10,394)	$ (12,298)

Name:	qcrh_DeferredCompensationAgreementsAbstract
Namespace Prefix:	qcrh_
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The compensation expense recognized during the period pertaining to the deferred compensation arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 710

-SubTopic 10

-Section 30

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6409875&loc=d3e20015-108363

+ Details

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Data Type:	xbrli:monetaryItemType
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Period Type:	duration

- Definition

The amount of distributions made to the individual during the period.

+ References

No definition available.

+ Details

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- Definition

The amount of payment into the fund established for purposes of making future disbursements to the individual in accordance with the terms and understanding of the deferred compensation arrangement.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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- Definition

Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements. Represents currently earned compensation under compensation arrangements that is not actually paid until a later date.

+ References

No definition available.

+ Details

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