Note 10 - Junior Subordinate Debentures (Details) - Trust Preferred Securities (Trust Preferred Securities [Member], USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Investments in and Advances to Affiliates [Line Items]
Amount Issued (in Dollars)	$ 42,787,000
Interest rate description
Interest rate period end	2.51%	2.68%
QCR Holdings Statutory Trust II [Member]
Investments in and Advances to Affiliates [Line Items]
Date issued	Feb. 29, 2004
Amount Issued (in Dollars)	12,372,000
Interest rate description	2.85%
Interest rate period end	3.10%	3.21%
QCR Holdings Statutory Trust III [Member]
Investments in and Advances to Affiliates [Line Items]
Date issued	Feb. 29, 2004
Amount Issued (in Dollars)	8,248,000
Interest rate description	2.85%
Interest rate period end	3.10%	3.21%
QCR Holdings Statutory Trust IV [Member]
Investments in and Advances to Affiliates [Line Items]
Date issued	May 31, 2005
Amount Issued (in Dollars)	5,155,000
Interest rate description	1.80%
Interest rate period end	2.04%	2.14%
QCR Holdings Statutory Trust V [Member]
Investments in and Advances to Affiliates [Line Items]
Date issued	Feb. 28, 2006
Amount Issued (in Dollars)	10,310,000
Interest rate description	1.55%
Interest rate period end	1.79%	1.89%
Community National Trust II [Member]
Investments in and Advances to Affiliates [Line Items]
Date issued	Sep. 30, 2004
Amount Issued (in Dollars)	3,093,000
Interest rate description	2.17%
Interest rate period end	2.42%
Community National Trust III [Member]
Investments in and Advances to Affiliates [Line Items]
Date issued	Mar. 31, 2007
Amount Issued (in Dollars)	$ 3,609,000
Interest rate description	1.75%
Interest rate period end	1.99%