Consolidated Statements Of Income (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Interest and dividend income:
Loans/leases, including fees	$ 66,810,952	$ 63,363,520	$ 64,807,673
Securities:
Taxable	10,061,066	10,781,300	10,877,832
Nontaxable	4,147,050	2,339,579	983,040
Interest-bearing deposits at financial institutions	275,352	378,566	404,879
Restricted investment securities	558,946	507,281	557,698
Federal funds sold	18,592	5,627	92,126
Total interest and dividend income	81,871,958	77,375,873	77,723,248
Interest expense:
Deposits	4,714,306	6,218,713	8,939,056
Short-term borrowings	293,020	248,545	290,450
Federal Home Loan Bank advances	6,863,216	7,279,599	7,972,025
Other borrowings	4,753,260	4,940,970	5,149,022
Junior subordinated debentures	1,142,719	1,038,786	1,227,839
Total interest expense	17,766,521	19,726,613	23,578,392
Net interest income	64,105,437	57,649,260	54,144,856
Provision for loan/lease losses	5,930,420	4,370,767	6,616,014
Net interest income after provision for loan/lease losses	58,175,017	53,278,493	47,528,842
Noninterest income:
Trust department fees	4,941,681	3,632,278	3,368,995
Investment advisory and management fees	2,580,140	2,361,159	2,108,918
Deposit service fees	4,267,162	3,485,929	3,493,001
Gains on sales of residential real estate loans, net	836,065	1,388,142	999,162
Gains on sales of government guaranteed portions of loans, net	2,148,979	1,069,565	1,565,881
Securities gains	432,492	104,600	1,472,528
Earnings on bank-owned life insurance	1,786,023	1,609,208	1,445,891
Bargain purchase gain on Community National Acquisition	1,841,385
Gains on sales of certain Community National Bank branches	2,334,216	580,000
Credit card issuing fees, net of processing costs	174,258	599,164	500,544
Losses on other real estate owned, net	(545,340)	(1,332,972)	(374,910)
Other	5,016,767	3,704,222	2,881,868
Total noninterest income	25,813,828	16,621,295	17,461,878
Noninterest expenses:
Salaries and employee benefits	37,510,318	33,274,509	30,365,020
Occupancy and equipment expense	6,712,468	5,635,257	5,297,949
Professional and data processing fees	6,424,594	4,317,939	4,461,187
FDIC and other insurance	2,587,041	2,330,611	2,698,282
Loan/lease expense	1,521,523	1,041,824	2,160,674
Advertising and marketing	1,726,314	1,445,476	1,288,797
Postage and telephone	1,069,142	959,708	937,557
Stationery and supplies	562,301	541,122	516,873
Bank service charges	1,144,757	853,895	725,717
Acquisition and data conversion costs	2,353,162
Prepayment fees on Federal Home Loan Bank advances			832,099
Other-than-temporary impairment losses on securities		62,400	118,847
Other	2,821,038	1,796,206	1,589,650
Total noninterest expenses	64,432,658	52,258,947	50,992,652
Income before income taxes	19,556,187	17,640,841	13,998,068
Federal and state income tax expense	4,617,942	4,534,601	3,868,199
Net income	14,938,245	13,106,240	10,129,869
Less: net income attributable to noncontrolling interests		488,473	438,221
Net income attributable to QCR Holdings, Inc.	14,938,245	12,617,767	9,691,648
Less: preferred stock dividends and discount accretion	3,168,302	3,496,085	5,283,885	[1]
Net income attributable to QCR Holdings, Inc. common stockholders	$ 11,769,943	$ 9,121,682	$ 4,407,763
Basic earnings per common share (in Dollars per share)	$ 2.13	$ 1.88	$ 0.93
Diluted earnings per common share (in Dollars per share)	$ 2.08	$ 1.85	$ 0.92
Weighted average common shares outstanding (in Shares)	5,531,948	4,844,776	4,724,781
Weighted average common and common equivalent shares outstanding (in Shares)	5,646,926	4,919,559	4,789,026
Cash dividends declared per common share (in Dollars per share)	$ 0.08	$ 0.08	$ 0.08

[1] For the year ended December 31, 2011, includes approximately $1.2 million of accelerated accretion of discount on the redemption of Series D Preferred Stock during the third quarter of 2011. See Note 11 for additional information.