Note 12 - Junior Subordinated Debentures (Tables)

12 Months Ended

Dec. 31, 2017

Notes Tables

Schedule of Subordinated Borrowing [Table Text Block]

	2017			2016
Note Payable to QCR Holdings Capital Trust II	$	10,310,000		$	10,310,000
Note Payable to QCR Holdings Capital Trust III		8,248,000			8,248,000
Note Payable to QCR Holdings Capital Trust V		10,310,000			10,310,000
Note Payable to Community National Trust II		3,093,000			3,093,000
Note Payable to Community National Trust III		3,609,000			3,609,000
Note Payable to Guaranty Bankshares Statutory Trust I*		4,640,000			-
Market Value Discount per ASC 805**		(2,723,513	)		(2,089,798	)
	$	37,486,487		$	33,480,202

Investments in and Advances to Affiliates [Table Text Block]

Name	Date Issued	Amount Outstanding December 31, 2017		Amount Outstanding December 31, 2016		Interest Rate	Interest Rate as of December 31, 2017		Interest Rate as of December 31, 2016
QCR Holdings Statutory Trust II*	February 2004	$	10,310,000	$	10,310,000	2.85% over 3-month LIBOR		4.54%		3.85%
QCR Holdings Statutory Trust III	February 2004		8,248,000		8,248,000	2.85% over 3-month LIBOR		4.54%		3.85%
QCR Holdings Statutory Trust V	February 2006		10,310,000		10,310,000	1.55% over 3-month LIBOR		2.91%		2.43%
Community National Statutory Trust II	September 2004		3,093,000		3,093,000	2.17% over 3-month LIBOR		3.80%		3.17%
Community National Statutory Trust III	March 2007		3,609,000		3,609,000	1.75% over 3-month LIBOR		3.32%		2.71%
Guaranty Bankshares Statutory Trust I	May 2005		4,640,000		-	1.75% over 3-month LIBOR		3.34%		N/A
		$	40,210,000	$	35,570,000	Weighted Average Rate		3.82%		3.26%