Consolidated Statements of Income (Unaudited) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Interest and dividend income:
Loans/leases, including fees	$ 16,775,590	$ 15,088,827
Securities:
Taxable	2,582,794	2,460,449
Nontaxable	1,454,056	802,473
Interest-bearing deposits at financial institutions	90,527	59,754
Restricted investment securities	128,925	125,105
Federal funds sold	3,319	874
Total interest and dividend income	21,035,211	18,537,482
Interest expense:
Deposits	1,101,593	1,116,791
Short-term borrowings	51,696	64,267
Federal Home Loan Bank advances	1,555,976	1,732,812
Other borrowings	1,171,531	1,190,755
Junior subordinated debentures	305,174	241,540
Total interest expense	4,185,970	4,346,165
Net interest income	16,849,241	14,191,317
Provision for loan/lease losses	1,094,162	1,057,782
Net interest income after provision for loan/lease losses	15,755,079	13,133,535
Noninterest income:
Trust department fees	1,500,342	1,039,670
Investment advisory and management fees	648,992	609,341
Deposit service fees	1,045,885	907,823
Gains on sales of residential real estate loans	63,487	291,151
Gains on sales government guaranteed portions of loans	194,019	845,224
Securities gains	20,625
Earnings on bank-owned life insurance	454,164	438,687
Losses on other real estate owned, net	(18,048)	(446,630)
Other	837,375	1,518,763
Total noninterest income	4,746,841	5,204,029
Noninterest expense:
Salaries and employee benefits	10,017,918	8,742,683
Occupancy and equipment expense	1,894,288	1,428,870
Professional and data processing fees	1,584,406	1,140,061
FDIC and other insurance	714,750	555,911
Loan/lease expense	345,636	245,091
Advertising and marketing	337,587	264,568
Postage and telephone	290,675	218,691
Stationery and supplies	151,751	110,670
Bank service charges	298,032	275,495
Acquisition and data conversion costs		356,578
Other	505,377	619,882
Total noninterest expense	16,140,420	13,958,500
Net income before income taxes	4,361,500	4,379,064
Federal and state income tax expense	472,285	1,113,920
Net income	3,889,215	3,265,144
Less: Preferred stock dividends	708,008	810,837
Net income attributable to QCR Holdings, Inc. common stockholders	$ 3,181,207	$ 2,454,307
Earnings per common share attributable to QCR Holdings, Inc. common shareholders
Basic (in Dollars per share)	$ 0.40	$ 0.50
Diluted (in Dollars per share)	$ 0.40	$ 0.49
Weighted average common shares outstanding (in Shares)	7,901,035	4,927,591
Weighted average common and common equivalent shares outstanding (in Shares)	8,030,043	5,034,342